651612625020 has 288 divisors, whose sum is σ = 2300443891200. Its totient is φ = 146209577472.

The previous prime is 651612625003. The next prime is 651612625067. The reversal of 651612625020 is 20526216156.

651612625020 is a `hidden beast` number, since 6 + 5 + 1 + 6 + 1 + 2 + 625 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 56269591 + ... + 56281169.

It is an arithmetic number, because the mean of its divisors is an integer number (7987652400).

Almost surely, 2^651612625020 is an apocalyptic number.

651612625020 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 651612625020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150221945600).

651612625020 is an abundant number, since it is smaller than the sum of its proper divisors (1648831266180).

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

651612625020 is a wasteful number, since it uses less digits than its factorization.

651612625020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12417 (or 12412 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 651612625020 in words is "six hundred fifty-one billion, six hundred twelve million, six hundred twenty-five thousand, twenty".