651155035128 has 128 divisors (see below), whose sum is σ = 1764910694400. Its totient is φ = 199010774016.

The previous prime is 651155035057. The next prime is 651155035133. The reversal of 651155035128 is 821530551156.

It is a self number, because there is not a number n which added to its sum of digits gives 651155035128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31785993 + ... + 31806471.

It is an arithmetic number, because the mean of its divisors is an integer number (13788364800).

Almost surely, 2^651155035128 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 651155035128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882455347200).

651155035128 is an abundant number, since it is smaller than the sum of its proper divisors (1113755659272).

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

651155035128 is a wasteful number, since it uses less digits than its factorization.

651155035128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21181 (or 21177 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 42.

The spelling of 651155035128 in words is "six hundred fifty-one billion, one hundred fifty-five million, thirty-five thousand, one hundred twenty-eight".