51622313631540 has 48 divisors (see below), whose sum is σ = 146166550971840. Its totient is φ = 13611276701440.

The previous prime is 51622313631523. The next prime is 51622313631541. The reversal of 51622313631540 is 4513631322615.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51622313631492 and 51622313631501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51622313631541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4833544626 + ... + 4833555305.

It is an arithmetic number, because the mean of its divisors is an integer number (3045136478580).

Almost surely, 2^{51622313631540} is an apocalyptic number.

It is an amenable number.

51622313631540 is an abundant number, since it is smaller than the sum of its proper divisors (94544237340300).

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

51622313631540 is a wasteful number, since it uses less digits than its factorization.

51622313631540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9667100032 (or 9667100030 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 51622313631540 in words is "fifty-one trillion, six hundred twenty-two billion, three hundred thirteen million, six hundred thirty-one thousand, five hundred forty".