64037564140 has 24 divisors (see below), whose sum is σ = 146704238352. Its totient is φ = 23286386880.

The previous prime is 64037564117. The next prime is 64037564141. The reversal of 64037564140 is 4146573046.

It is a super-2 number, since 2×64037564140² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64037564093 and 64037564102.

It is not an unprimeable number, because it can be changed into a prime (64037564141) 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, 145539699 + ... + 145540138.

It is an arithmetic number, because the mean of its divisors is an integer number (6112676598).

Almost surely, 2^64037564140 is an apocalyptic number.

It is an amenable number.

64037564140 is an abundant number, since it is smaller than the sum of its proper divisors (82666674212).

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

64037564140 is a wasteful number, since it uses less digits than its factorization.

64037564140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291079857 (or 291079855 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 64037564140 in words is "sixty-four billion, thirty-seven million, five hundred sixty-four thousand, one hundred forty".