51155502253436 has 24 divisors (see below), whose sum is σ = 107695794218880. Its totient is φ = 20769903170352.

The previous prime is 51155502253399. The next prime is 51155502253463. The reversal of 51155502253436 is 63435220555115.

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, 48078479030 + ... + 48078480093.

It is an arithmetic number, because the mean of its divisors is an integer number (4487324759120).

Almost surely, 2^{51155502253436} is an apocalyptic number.

It is an amenable number.

51155502253436 is an abundant number, since it is smaller than the sum of its proper divisors (56540291965444).

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

51155502253436 is a wasteful number, since it uses less digits than its factorization.

51155502253436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96156959153 (or 96156959151 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 47.

The spelling of 51155502253436 in words is "fifty-one trillion, one hundred fifty-five billion, five hundred two million, two hundred fifty-three thousand, four hundred thirty-six".