651240100896 has 576 divisors, whose sum is σ = 2345418270720. Its totient is φ = 155910666240.

The previous prime is 651240100883. The next prime is 651240100919. The reversal of 651240100896 is 698001042156.

It is a super-2 number, since 2×651240100896² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 36367081 + ... + 36384983.

It is an arithmetic number, because the mean of its divisors is an integer number (4071906720).

Almost surely, 2^651240100896 is an apocalyptic number.

651240100896 is a gapful number since it is divisible by the number (66) 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 651240100896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172709135360).

651240100896 is an abundant number, since it is smaller than the sum of its proper divisors (1694178169824).

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

651240100896 is a wasteful number, since it uses less digits than its factorization.

651240100896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17997 (or 17982 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 651240100896 in words is "six hundred fifty-one billion, two hundred forty million, one hundred thousand, eight hundred ninety-six".