51155535523413 has 16 divisors (see below), whose sum is σ = 69071099500800. Its totient is φ = 33671835125760.

The previous prime is 51155535523399. The next prime is 51155535523441. The reversal of 51155535523413 is 31432553555115.

It is not a de Polignac number, because 51155535523413 - 2⁶ = 51155535523349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155535423413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66861493 + ... + 67622261.

It is an arithmetic number, because the mean of its divisors is an integer number (4316943718800).

Almost surely, 2^{51155535523413} is an apocalyptic number.

It is an amenable number.

51155535523413 is a deficient number, since it is larger than the sum of its proper divisors (17915563977387).

51155535523413 is a wasteful number, since it uses less digits than its factorization.

51155535523413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044572.

The product of its digits is 3375000, while the sum is 48.

The spelling of 51155535523413 in words is "fifty-one trillion, one hundred fifty-five billion, five hundred thirty-five million, five hundred twenty-three thousand, four hundred thirteen".