51034978388 has 24 divisors (see below), whose sum is σ = 91674519552. Its totient is φ = 24847771424.

The previous prime is 51034978387. The next prime is 51034978427. The reversal of 51034978388 is 88387943015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51034978387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651956 + ... + 726027.

It is an arithmetic number, because the mean of its divisors is an integer number (3819771648).

Almost surely, 2^51034978388 is an apocalyptic number.

It is an amenable number.

51034978388 is a deficient number, since it is larger than the sum of its proper divisors (40639541164).

51034978388 is a wasteful number, since it uses less digits than its factorization.

51034978388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378231 (or 1378229 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 51034978388 in words is "fifty-one billion, thirty-four million, nine hundred seventy-eight thousand, three hundred eighty-eight".