51236140320 has 288 divisors, whose sum is σ = 180911937024. Its totient is φ = 13190860800.

The previous prime is 51236140271. The next prime is 51236140363. The reversal of 51236140320 is 2304163215.

51236140320 is a `hidden beast` number, since 5 + 1 + 23 + 614 + 0 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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, 23256339 + ... + 23258541.

It is an arithmetic number, because the mean of its divisors is an integer number (628166448).

Almost surely, 2^51236140320 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 51236140320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90455968512).

51236140320 is an abundant number, since it is smaller than the sum of its proper divisors (129675796704).

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

51236140320 is a wasteful number, since it uses less digits than its factorization.

51236140320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2765 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 51236140320 in words is "fifty-one billion, two hundred thirty-six million, one hundred forty thousand, three hundred twenty".