55135431256 has 32 divisors (see below), whose sum is σ = 106020860400. Its totient is φ = 26864732160.

The previous prime is 55135431227. The next prime is 55135431283. The reversal of 55135431256 is 65213453155.

It is a happy number.

It is a super-3 number, since 3×55135431256³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194440 + ... + 384808.

Almost surely, 2^55135431256 is an apocalyptic number.

It is an amenable number.

55135431256 is a deficient number, since it is larger than the sum of its proper divisors (50885429144).

55135431256 is a wasteful number, since it uses less digits than its factorization.

55135431256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191299 (or 191295 counting only the distinct ones).

The product of its digits is 270000, while the sum is 40.

The spelling of 55135431256 in words is "fifty-five billion, one hundred thirty-five million, four hundred thirty-one thousand, two hundred fifty-six".