651561156015 has 32 divisors (see below), whose sum is σ = 1299737581056. Its totient is φ = 270778661760.

The previous prime is 651561155933. The next prime is 651561156049. The reversal of 651561156015 is 510651165156.

It is not a de Polignac number, because 651561156015 - 2⁹ = 651561155503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282059952 + ... + 282062261.

It is an arithmetic number, because the mean of its divisors is an integer number (40616799408).

Almost surely, 2^651561156015 is an apocalyptic number.

651561156015 is a deficient number, since it is larger than the sum of its proper divisors (648176425041).

651561156015 is a wasteful number, since it uses less digits than its factorization.

651561156015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564122239.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 651561156015 in words is "six hundred fifty-one billion, five hundred sixty-one million, one hundred fifty-six thousand, fifteen".