52151787618 has 32 divisors (see below), whose sum is σ = 121158257280. Its totient is φ = 14656239360.

The previous prime is 52151787617. The next prime is 52151787673. The reversal of 52151787618 is 81678715125.

It is a happy number.

It is a super-2 number, since 2×52151787618² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52151787617) 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, 10175383 + ... + 10180506.

It is an arithmetic number, because the mean of its divisors is an integer number (3786195540).

Almost surely, 2^52151787618 is an apocalyptic number.

52151787618 is an abundant number, since it is smaller than the sum of its proper divisors (69006469662).

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

52151787618 is a wasteful number, since it uses less digits than its factorization.

52151787618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20355962.

The product of its digits is 940800, while the sum is 51.

The spelling of 52151787618 in words is "fifty-two billion, one hundred fifty-one million, seven hundred eighty-seven thousand, six hundred eighteen".