51379999482240 has 1536 divisors, whose sum is σ = 220976588851200. Its totient is φ = 10807758028800.

The previous prime is 51379999482191. The next prime is 51379999482277. The reversal of 51379999482240 is 4228499997315.

51379999482240 is a `hidden beast` number, since 5 + 1 + 37 + 9 + 9 + 99 + 482 + 24 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14436637581 + ... + 14436641139.

It is an arithmetic number, because the mean of its divisors is an integer number (143864966700).

Almost surely, 2^{51379999482240} 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 51379999482240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110488294425600).

51379999482240 is an abundant number, since it is smaller than the sum of its proper divisors (169596589368960).

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

51379999482240 is a wasteful number, since it uses less digits than its factorization.

51379999482240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656 (or 4641 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 72.

The spelling of 51379999482240 in words is "fifty-one trillion, three hundred seventy-nine billion, nine hundred ninety-nine million, four hundred eighty-two thousand, two hundred forty".