51722863047 has 12 divisors (see below), whose sum is σ = 74729029024. Its totient is φ = 34473496320.

The previous prime is 51722863033. The next prime is 51722863117. The reversal of 51722863047 is 74036822715.

51722863047 is a `hidden beast` number, since 5 + 1 + 7 + 2 + 2 + 8 + 630 + 4 + 7 = 666.

It is not a de Polignac number, because 51722863047 - 2¹⁵ = 51722830279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51722862993 and 51722863011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51722863147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 661978 + ... + 735975.

Almost surely, 2^51722863047 is an apocalyptic number.

51722863047 is a deficient number, since it is larger than the sum of its proper divisors (23006165977).

51722863047 is a wasteful number, since it uses less digits than its factorization.

51722863047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402070 (or 1402067 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 51722863047 in words is "fifty-one billion, seven hundred twenty-two million, eight hundred sixty-three thousand, forty-seven".