651235162656 has 96 divisors (see below), whose sum is σ = 1842435624960. Its totient is φ = 200222889984.

The previous prime is 651235162639. The next prime is 651235162673. The reversal of 651235162656 is 656261532156.

It is an interprime number because it is at equal distance from previous prime (651235162639) and next prime (651235162673).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392196 + ... + 1800188.

It is an arithmetic number, because the mean of its divisors is an integer number (19192037760).

Almost surely, 2^651235162656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651235162656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921217812480).

651235162656 is an abundant number, since it is smaller than the sum of its proper divisors (1191200462304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651235162656 is a wasteful number, since it uses less digits than its factorization.

651235162656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409298 (or 409290 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The spelling of 651235162656 in words is "six hundred fifty-one billion, two hundred thirty-five million, one hundred sixty-two thousand, six hundred fifty-six".