1553401515105 has 24 divisors (see below), whose sum is σ = 2937341047680. Its totient is φ = 753164370720.

The previous prime is 1553401515091. The next prime is 1553401515157. The reversal of 1553401515105 is 5015151043551.

1553401515105 is a `hidden beast` number, since 1 + 5 + 5 + 34 + 0 + 1 + 515 + 105 = 666.

It is not a de Polignac number, because 1553401515105 - 2⁴ = 1553401515089 is a prime.

It is a super-2 number, since 2×1553401515105² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1553401515105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1569091945 + ... + 1569092934.

It is an arithmetic number, because the mean of its divisors is an integer number (122389210320).

Almost surely, 2^{1553401515105} is an apocalyptic number.

1553401515105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553401515105 is a deficient number, since it is larger than the sum of its proper divisors (1383939532575).

1553401515105 is a wasteful number, since it uses less digits than its factorization.

1553401515105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138184901 (or 3138184898 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

Adding to 1553401515105 its reverse (5015151043551), we get a palindrome (6568552558656).

The spelling of 1553401515105 in words is "one trillion, five hundred fifty-three billion, four hundred one million, five hundred fifteen thousand, one hundred five".