651380022945 has 32 divisors (see below), whose sum is σ = 1189306477440. Its totient is φ = 338013414720.

The previous prime is 651380022941. The next prime is 651380022959. The reversal of 651380022945 is 549220083156.

651380022945 is a `hidden beast` number, since 6 + 5 + 1 + 380 + 0 + 229 + 45 = 666.

651380022945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 651380022945 - 2² = 651380022941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 651380022945.

It is not an unprimeable number, because it can be changed into a prime (651380022941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65198211 + ... + 65208200.

It is an arithmetic number, because the mean of its divisors is an integer number (37165827420).

Almost surely, 2^651380022945 is an apocalyptic number.

It is an amenable number.

651380022945 is a deficient number, since it is larger than the sum of its proper divisors (537926454495).

651380022945 is a wasteful number, since it uses less digits than its factorization.

651380022945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130406462 (or 130406456 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 651380022945 in words is "six hundred fifty-one billion, three hundred eighty million, twenty-two thousand, nine hundred forty-five".