5638157772 has 24 divisors (see below), whose sum is σ = 14167678896. Its totient is φ = 1734817728.

The previous prime is 5638157753. The next prime is 5638157773. The reversal of 5638157772 is 2777518365.

It is not an unprimeable number, because it can be changed into a prime (5638157773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18070863 + ... + 18071174.

It is an arithmetic number, because the mean of its divisors is an integer number (590319954).

Almost surely, 2^5638157772 is an apocalyptic number.

5638157772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

5638157772 is an abundant number, since it is smaller than the sum of its proper divisors (8529521124).

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

5638157772 is a wasteful number, since it uses less digits than its factorization.

5638157772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36142057 (or 36142055 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 51.

The square root of 5638157772 is about 75087.6672430300. The cubic root of 5638157772 is about 1779.8322625257.

The spelling of 5638157772 in words is "five billion, six hundred thirty-eight million, one hundred fifty-seven thousand, seven hundred seventy-two".