651650100156 has 144 divisors (see below), whose sum is σ = 1877889581568. Its totient is φ = 188773401600.

The previous prime is 651650100119. The next prime is 651650100169. The reversal of 651650100156 is 651001056156.

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

It is a self number, because there is not a number n which added to its sum of digits gives 651650100156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 393196 + ... + 1207436.

It is an arithmetic number, because the mean of its divisors is an integer number (13040899872).

Almost surely, 2^651650100156 is an apocalyptic number.

651650100156 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 651650100156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938944790784).

651650100156 is an abundant number, since it is smaller than the sum of its proper divisors (1226239481412).

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

651650100156 is a wasteful number, since it uses less digits than its factorization.

651650100156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814352 (or 814347 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 651650100156 in words is "six hundred fifty-one billion, six hundred fifty million, one hundred thousand, one hundred fifty-six".