51291422004 has 48 divisors (see below), whose sum is σ = 122340377600. Its totient is φ = 16720757856.

The previous prime is 51291421991. The next prime is 51291422009. The reversal of 51291422004 is 40022419215.

It is a super-3 number, since 3×51291422004³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51291422009) 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, 117724 + ... + 341235.

Almost surely, 2^51291422004 is an apocalyptic number.

It is an amenable number.

51291422004 is an abundant number, since it is smaller than the sum of its proper divisors (71048955596).

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

51291422004 is a wasteful number, since it uses less digits than its factorization.

51291422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459172 (or 459170 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 51291422004 in words is "fifty-one billion, two hundred ninety-one million, four hundred twenty-two thousand, four".