651053178552 has 128 divisors (see below), whose sum is σ = 1880359810560. Its totient is φ = 184003522560.

The previous prime is 651053178539. The next prime is 651053178577. The reversal of 651053178552 is 255871350156.

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, 6841248 + ... + 6935760.

It is an arithmetic number, because the mean of its divisors is an integer number (14690311020).

Almost surely, 2^651053178552 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 651053178552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940179905280).

651053178552 is an abundant number, since it is smaller than the sum of its proper divisors (1229306632008).

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

651053178552 is a wasteful number, since it uses less digits than its factorization.

651053178552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94973 (or 94969 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 48.

The spelling of 651053178552 in words is "six hundred fifty-one billion, fifty-three million, one hundred seventy-eight thousand, five hundred fifty-two".