1553401332135 has 24 divisors (see below), whose sum is σ = 2712216059280. Its totient is φ = 822433402752.

The previous prime is 1553401332029. The next prime is 1553401332151. The reversal of 1553401332135 is 5312331043551.

1553401332135 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 401 + 33 + 213 + 5 = 666.

It is not a de Polignac number, because 1553401332135 - 2¹⁸ = 1553401069991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1553401332135.

It is a congruent number.

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, 125979345 + ... + 125991674.

It is an arithmetic number, because the mean of its divisors is an integer number (113009002470).

Almost surely, 2^{1553401332135} is an apocalyptic number.

1553401332135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1553401332135 is a deficient number, since it is larger than the sum of its proper divisors (1158814727145).

1553401332135 is a wasteful number, since it uses less digits than its factorization.

1553401332135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251971167 (or 251971164 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 1553401332135 its reverse (5312331043551), we get a palindrome (6865732375686).

The spelling of 1553401332135 in words is "one trillion, five hundred fifty-three billion, four hundred one million, three hundred thirty-two thousand, one hundred thirty-five".