645852134596 has 24 divisors (see below), whose sum is σ = 1152374065920. Its totient is φ = 316610946912.

The previous prime is 645852134479. The next prime is 645852134597. The reversal of 645852134596 is 695431258546.

It is a happy number.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 645852134596.

It is not an unprimeable number, because it can be changed into a prime (645852134597) 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, 764916 + ... + 1369963.

It is an arithmetic number, because the mean of its divisors is an integer number (48015586080).

Almost surely, 2^645852134596 is an apocalyptic number.

It is an amenable number.

645852134596 is a deficient number, since it is larger than the sum of its proper divisors (506521931324).

645852134596 is a wasteful number, since it uses less digits than its factorization.

645852134596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136363 (or 2136361 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 58.

The spelling of 645852134596 in words is "six hundred forty-five billion, eight hundred fifty-two million, one hundred thirty-four thousand, five hundred ninety-six".