51125750990 has 8 divisors (see below), whose sum is σ = 92026351800. Its totient is φ = 20450300392.

The previous prime is 51125750987. The next prime is 51125751007. The reversal of 51125750990 is 9905752115.

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

It is a super-2 number, since 2×51125750990² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556287540 + ... + 2556287559.

It is an arithmetic number, because the mean of its divisors is an integer number (11503293975).

Almost surely, 2^51125750990 is an apocalyptic number.

51125750990 is a deficient number, since it is larger than the sum of its proper divisors (40900600810).

51125750990 is a wasteful number, since it uses less digits than its factorization.

51125750990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112575106.

The product of its (nonzero) digits is 141750, while the sum is 44.

The spelling of 51125750990 in words is "fifty-one billion, one hundred twenty-five million, seven hundred fifty thousand, nine hundred ninety".