2155396935512 has 32 divisors (see below), whose sum is σ = 4116978386400. Its totient is φ = 1057616524800.

The previous prime is 2155396935469. The next prime is 2155396935521.

It is a happy number.

2155396935512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2155396935512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4816289 + ... + 5244752.

It is an arithmetic number, because the mean of its divisors is an integer number (128655574575).

Almost surely, 2^{2155396935512} is an apocalyptic number.

It is an amenable number.

2155396935512 is a deficient number, since it is larger than the sum of its proper divisors (1961581450888).

2155396935512 is a wasteful number, since it uses less digits than its factorization.

2155396935512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061547 (or 10061543 counting only the distinct ones).

The product of its digits is 10935000, while the sum is 56.

The spelling of 2155396935512 in words is "two trillion, one hundred fifty-five billion, three hundred ninety-six million, nine hundred thirty-five thousand, five hundred twelve".