51420062642 has 32 divisors (see below), whose sum is σ = 85103875584. Its totient is φ = 23152536000.

The previous prime is 51420062623. The next prime is 51420062647. The reversal of 51420062642 is 24626002415.

It is a super-3 number, since 3×51420062642³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51420062599 and 51420062608.

It is not an unprimeable number, because it can be changed into a prime (51420062647) 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, 312392 + ... + 447692.

It is an arithmetic number, because the mean of its divisors is an integer number (2659496112).

Almost surely, 2^51420062642 is an apocalyptic number.

51420062642 is a deficient number, since it is larger than the sum of its proper divisors (33683812942).

51420062642 is a wasteful number, since it uses less digits than its factorization.

51420062642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135674.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 51420062642 in words is "fifty-one billion, four hundred twenty million, sixty-two thousand, six hundred forty-two".