31553455435120 has 40 divisors (see below), whose sum is σ = 73372465290240. Its totient is φ = 12619544513280.

The previous prime is 31553455435087. The next prime is 31553455435129. The reversal of 31553455435120 is 2153455435513.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×31553455435120² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31553455435129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28160496 + ... + 29259535.

It is an arithmetic number, because the mean of its divisors is an integer number (1834311632256).

Almost surely, 2^{31553455435120} is an apocalyptic number.

It is an amenable number.

31553455435120 is an abundant number, since it is smaller than the sum of its proper divisors (41819009855120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31553455435120 is a wasteful number, since it uses less digits than its factorization.

31553455435120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57426913 (or 57426907 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 46.

The spelling of 31553455435120 in words is "thirty-one trillion, five hundred fifty-three billion, four hundred fifty-five million, four hundred thirty-five thousand, one hundred twenty".