65878820074 has 8 divisors (see below), whose sum is σ = 98820373860. Its totient is φ = 32938695456.

The previous prime is 65878820027. The next prime is 65878820107. The reversal of 65878820074 is 47002887856.

It can be written as a sum of positive squares in 2 ways, for example, as 58779578025 + 7099242049 = 242445^2 + 84257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 65878819997 and 65878820024.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233469 + ... + 431584.

Almost surely, 2^65878820074 is an apocalyptic number.

65878820074 is a deficient number, since it is larger than the sum of its proper divisors (32941553786).

65878820074 is a wasteful number, since it uses less digits than its factorization.

65878820074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714584.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 65878820074 in words is "sixty-five billion, eight hundred seventy-eight million, eight hundred twenty thousand, seventy-four".