664077418851 has 144 divisors (see below), whose sum is σ = 1157575276032. Its totient is φ = 331452000000.

The previous prime is 664077418817. The next prime is 664077418859. The reversal of 664077418851 is 158814770466.

It is not a de Polignac number, because 664077418851 - 2¹⁵ = 664077386083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664077418791 and 664077418800.

It is not an unprimeable number, because it can be changed into a prime (664077418859) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 368726151 + ... + 368727951.

Almost surely, 2^664077418851 is an apocalyptic number.

664077418851 is a deficient number, since it is larger than the sum of its proper divisors (493497857181).

664077418851 is a wasteful number, since it uses less digits than its factorization.

664077418851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 664077418851 in words is "six hundred sixty-four billion, seventy-seven million, four hundred eighteen thousand, eight hundred fifty-one".