51011302405 has 32 divisors (see below), whose sum is σ = 70809919488. Its totient is φ = 34555809600.

The previous prime is 51011302379. The next prime is 51011302409. The reversal of 51011302405 is 50420311015.

It is a happy number.

It is not a de Polignac number, because 51011302405 - 2¹¹ = 51011300357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51011302409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 997510 + ... + 1047400.

It is an arithmetic number, because the mean of its divisors is an integer number (2212809984).

Almost surely, 2^51011302405 is an apocalyptic number.

It is an amenable number.

51011302405 is a deficient number, since it is larger than the sum of its proper divisors (19798617083).

51011302405 is a wasteful number, since it uses less digits than its factorization.

51011302405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50257.

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 51011302405 in words is "fifty-one billion, eleven million, three hundred two thousand, four hundred five".