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13154631603421 = 711198991545867
BaseRepresentation
bin1011111101101100110100…
…1001001101010011011101
31201120120101220010212121111
42333123031021031103131
53211011141142302141
643551053200302021
72525251014502540
oct277331511152335
951516356125544
1013154631603421
114211936666070
121585557611911
1374562696b8c9
1433698a97c857
1517c2aeb9d381
hexbf6cd24d4dd

13154631603421 has 16 divisors (see below), whose sum is σ = 17263768066560. Its totient is φ = 9710869535280.

The previous prime is 13154631603353. The next prime is 13154631603433. The reversal of 13154631603421 is 12430613645131.

It is a cyclic number.

It is not a de Polignac number, because 13154631603421 - 235 = 13120271865053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13154631603721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4495771471 + ... + 4495774396.

It is an arithmetic number, because the mean of its divisors is an integer number (1078985504160).

Almost surely, 213154631603421 is an apocalyptic number.

13154631603421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13154631603421 is a deficient number, since it is larger than the sum of its proper divisors (4109136463139).

13154631603421 is a wasteful number, since it uses less digits than its factorization.

13154631603421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8991545904.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 13154631603421 in words is "thirteen trillion, one hundred fifty-four billion, six hundred thirty-one million, six hundred three thousand, four hundred twenty-one".

Divisors: 1 7 11 19 77 133 209 1463 8991545867 62940821069 98907004537 170839371473 692349031759 1195875600311 1879233086203 13154631603421