51738922620 has 1152 divisors, whose sum is σ = 215115264000. Its totient is φ = 9957427200.

The previous prime is 51738922619. The next prime is 51738922633. The reversal of 51738922620 is 2622983715.

51738922620 is a `hidden beast` number, since 5 + 1 + 7 + 389 + 2 + 262 + 0 = 666.

51738922620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51738922620² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 728717185 + ... + 728717255.

It is an arithmetic number, because the mean of its divisors is an integer number (186732000).

Almost surely, 2^51738922620 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 51738922620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107557632000).

51738922620 is an abundant number, since it is smaller than the sum of its proper divisors (163376341380).

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

51738922620 is a wasteful number, since it uses less digits than its factorization.

51738922620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 51738922620 in words is "fifty-one billion, seven hundred thirty-eight million, nine hundred twenty-two thousand, six hundred twenty".