20377051264 has 16 divisors (see below), whose sum is σ = 40594907070. Its totient is φ = 10188525568.

The previous prime is 20377051229. The next prime is 20377051271. The reversal of 20377051264 is 46215077302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12841422400 + 7535628864 = 113320^2 + 86808^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79597729 + ... + 79597984.

Almost surely, 2^20377051264 is an apocalyptic number.

It is an amenable number.

20377051264 is a deficient number, since it is larger than the sum of its proper divisors (20217855806).

20377051264 is an equidigital number, since it uses as much as digits as its factorization.

20377051264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159195727 (or 159195715 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 20377051264 in words is "twenty billion, three hundred seventy-seven million, fifty-one thousand, two hundred sixty-four".