651034687680 has 560 divisors, whose sum is σ = 2510918625600. Its totient is φ = 159166881792.

The previous prime is 651034687673. The next prime is 651034687687. The reversal of 651034687680 is 86786430156.

651034687680 is a `hidden beast` number, since 6 + 5 + 103 + 468 + 76 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (651034687673) and next prime (651034687687).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (651034687687) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 50200557 + ... + 50213523.

It is an arithmetic number, because the mean of its divisors is an integer number (4483783260).

Almost surely, 2^651034687680 is an apocalyptic number.

651034687680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651034687680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255459312800).

651034687680 is an abundant number, since it is smaller than the sum of its proper divisors (1859883937920).

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

651034687680 is a wasteful number, since it uses less digits than its factorization.

651034687680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13158 (or 13139 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 651034687680 in words is "six hundred fifty-one billion, thirty-four million, six hundred eighty-seven thousand, six hundred eighty".