65412894500 has 24 divisors (see below), whose sum is σ = 142861762680. Its totient is φ = 26165157600.

The previous prime is 65412894487. The next prime is 65412894557. The reversal of 65412894500 is 549821456.

It can be written as a sum of positive squares in 4 ways, for example, as 1605124096 + 63807770404 = 40064^2 + 252602^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65412395 + ... + 65413394.

It is an arithmetic number, because the mean of its divisors is an integer number (5952573445).

Almost surely, 2^65412894500 is an apocalyptic number.

It is an amenable number.

65412894500 is an abundant number, since it is smaller than the sum of its proper divisors (77448868180).

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

65412894500 is a wasteful number, since it uses less digits than its factorization.

65412894500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130825808 (or 130825796 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 65412894500 in words is "sixty-five billion, four hundred twelve million, eight hundred ninety-four thousand, five hundred".