51620550462 has 96 divisors (see below), whose sum is σ = 121365343008. Its totient is φ = 15762751488.

The previous prime is 51620550427. The next prime is 51620550521. The reversal of 51620550462 is 26405502615.

51620550462 is a `hidden beast` number, since 5 + 1 + 62 + 0 + 550 + 46 + 2 = 666.

It is a super-3 number, since 3×51620550462³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18749278 + ... + 18752030.

It is an arithmetic number, because the mean of its divisors is an integer number (1264222323).

Almost surely, 2^51620550462 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51620550462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60682671504).

51620550462 is an abundant number, since it is smaller than the sum of its proper divisors (69744792546).

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

51620550462 is a wasteful number, since it uses less digits than its factorization.

51620550462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 51620550462 in words is "fifty-one billion, six hundred twenty million, five hundred fifty thousand, four hundred sixty-two".