51201323135 has 16 divisors (see below), whose sum is σ = 64898549760. Its totient is φ = 38717874720.

The previous prime is 51201323111. The next prime is 51201323137. The reversal of 51201323135 is 53132310215.

It is not a de Polignac number, because 51201323135 - 2⁶ = 51201323071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51201323137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3834395 + ... + 3847724.

It is an arithmetic number, because the mean of its divisors is an integer number (4056159360).

Almost surely, 2^51201323135 is an apocalyptic number.

51201323135 is a deficient number, since it is larger than the sum of its proper divisors (13697226625).

51201323135 is a wasteful number, since it uses less digits than its factorization.

51201323135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682198.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 51201323135 in words is "fifty-one billion, two hundred one million, three hundred twenty-three thousand, one hundred thirty-five".