651900968451 has 16 divisors (see below), whose sum is σ = 979381739520. Its totient is φ = 428479508520.

The previous prime is 651900968449. The next prime is 651900968497. The reversal of 651900968451 is 154869009156.

It is not a de Polignac number, because 651900968451 - 2¹ = 651900968449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (651900768451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170029635 + ... + 170033468.

It is an arithmetic number, because the mean of its divisors is an integer number (61211358720).

Almost surely, 2^651900968451 is an apocalyptic number.

651900968451 is a deficient number, since it is larger than the sum of its proper divisors (327480771069).

651900968451 is a wasteful number, since it uses less digits than its factorization.

651900968451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340063183 (or 340063177 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 651900968451 in words is "six hundred fifty-one billion, nine hundred million, nine hundred sixty-eight thousand, four hundred fifty-one".