651660156051 has 4 divisors (see below), whose sum is σ = 868880208072. Its totient is φ = 434440104032.

The previous prime is 651660156011. The next prime is 651660156073. The reversal of 651660156051 is 150651066156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651660156051 - 2¹⁷ = 651660024979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 651660155994 and 651660156012.

It is not an unprimeable number, because it can be changed into a prime (651660156011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108610026006 + ... + 108610026011.

It is an arithmetic number, because the mean of its divisors is an integer number (217220052018).

Almost surely, 2^651660156051 is an apocalyptic number.

651660156051 is a deficient number, since it is larger than the sum of its proper divisors (217220052021).

651660156051 is a wasteful number, since it uses less digits than its factorization.

651660156051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217220052020.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 651660156051 in words is "six hundred fifty-one billion, six hundred sixty million, one hundred fifty-six thousand, fifty-one".