51988990534 has 8 divisors (see below), whose sum is σ = 83982215520. Its totient is φ = 23994918696.

The previous prime is 51988990531. The next prime is 51988990579. The reversal of 51988990534 is 43509988915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51988990531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999788254 + ... + 999788305.

It is an arithmetic number, because the mean of its divisors is an integer number (10497776940).

Almost surely, 2^51988990534 is an apocalyptic number.

51988990534 is a deficient number, since it is larger than the sum of its proper divisors (31993224986).

51988990534 is a wasteful number, since it uses less digits than its factorization.

51988990534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999576574.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 51988990534 in words is "fifty-one billion, nine hundred eighty-eight million, nine hundred ninety thousand, five hundred thirty-four".