51220241415 has 192 divisors, whose sum is σ = 106748928000. Its totient is φ = 22235496192.

The previous prime is 51220241399. The next prime is 51220241441. The reversal of 51220241415 is 51414202215.

It is a happy number.

51220241415 is a `hidden beast` number, since 5 + 1 + 2 + 2 + 0 + 241 + 415 = 666.

It is not a de Polignac number, because 51220241415 - 2⁴ = 51220241399 is a prime.

It is a super-2 number, since 2×51220241415² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 85509286 + ... + 85509884.

It is an arithmetic number, because the mean of its divisors is an integer number (555984000).

Almost surely, 2^51220241415 is an apocalyptic number.

51220241415 is an abundant number, since it is smaller than the sum of its proper divisors (55528686585).

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

51220241415 is a wasteful number, since it uses less digits than its factorization.

51220241415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 51220241415 in words is "fifty-one billion, two hundred twenty million, two hundred forty-one thousand, four hundred fifteen".