57215867946 has 16 divisors (see below), whose sum is σ = 114435012384. Its totient is φ = 19071409904.

The previous prime is 57215867941. The next prime is 57215867999. The reversal of 57215867946 is 64976851275.

It is a happy number.

It is a super-2 number, since 2×57215867946² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57215867946.

It is not an unprimeable number, because it can be changed into a prime (57215867941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130741 + ... + 362663.

It is an arithmetic number, because the mean of its divisors is an integer number (7152188274).

Almost surely, 2^57215867946 is an apocalyptic number.

57215867946 is an abundant number, since it is smaller than the sum of its proper divisors (57219144438).

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

57215867946 is a wasteful number, since it uses less digits than its factorization.

57215867946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273045.

The product of its digits is 25401600, while the sum is 60.

The spelling of 57215867946 in words is "fifty-seven billion, two hundred fifteen million, eight hundred sixty-seven thousand, nine hundred forty-six".