51201312788 has 24 divisors (see below), whose sum is σ = 90202728000. Its totient is φ = 25429621248.

The previous prime is 51201312683. The next prime is 51201312817. The reversal of 51201312788 is 88721310215.

It is a super-2 number, since 2×51201312788² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334388 + ... + 462836.

It is an arithmetic number, because the mean of its divisors is an integer number (3758447000).

Almost surely, 2^51201312788 is an apocalyptic number.

It is an amenable number.

51201312788 is a deficient number, since it is larger than the sum of its proper divisors (39001415212).

51201312788 is a wasteful number, since it uses less digits than its factorization.

51201312788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129119 (or 129117 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 51201312788 in words is "fifty-one billion, two hundred one million, three hundred twelve thousand, seven hundred eighty-eight".