51664950628 has 12 divisors (see below), whose sum is σ = 90515601792. Its totient is φ = 25803350120.

The previous prime is 51664950599. The next prime is 51664950637. The reversal of 51664950628 is 82605946615.

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, 7277308 + ... + 7284403.

It is an arithmetic number, because the mean of its divisors is an integer number (7542966816).

Almost surely, 2^51664950628 is an apocalyptic number.

It is an amenable number.

51664950628 is a deficient number, since it is larger than the sum of its proper divisors (38850651164).

51664950628 is a wasteful number, since it uses less digits than its factorization.

51664950628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14562602 (or 14562600 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 51664950628 in words is "fifty-one billion, six hundred sixty-four million, nine hundred fifty thousand, six hundred twenty-eight".