651156505071 has 16 divisors (see below), whose sum is σ = 869776497408. Its totient is φ = 433320940800.

The previous prime is 651156505061. The next prime is 651156505099. The reversal of 651156505071 is 170505651156.

It is not a de Polignac number, because 651156505071 - 2⁶ = 651156505007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651156505061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5108191 + ... + 5234111.

It is an arithmetic number, because the mean of its divisors is an integer number (54361031088).

Almost surely, 2^651156505071 is an apocalyptic number.

651156505071 is a deficient number, since it is larger than the sum of its proper divisors (218619992337).

651156505071 is a wasteful number, since it uses less digits than its factorization.

651156505071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129022.

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 651156505071 in words is "six hundred fifty-one billion, one hundred fifty-six million, five hundred five thousand, seventy-one".