51031154996 has 12 divisors (see below), whose sum is σ = 90307943460. Its totient is φ = 25228885440.

The previous prime is 51031154939. The next prime is 51031155001. The reversal of 51031154996 is 69945113015.

It can be written as a sum of positive squares in 2 ways, for example, as 14230104100 + 36801050896 = 119290^2 + 191836^2 .

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 3 ways as a sum of consecutive naturals, for example, 71672615 + ... + 71673326.

It is an arithmetic number, because the mean of its divisors is an integer number (7525661955).

Almost surely, 2^51031154996 is an apocalyptic number.

It is an amenable number.

51031154996 is a deficient number, since it is larger than the sum of its proper divisors (39276788464).

51031154996 is a wasteful number, since it uses less digits than its factorization.

51031154996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143346034 (or 143346032 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 51031154996 in words is "fifty-one billion, thirty-one million, one hundred fifty-four thousand, nine hundred ninety-six".