51159223752 has 64 divisors (see below), whose sum is σ = 157413002880. Its totient is φ = 13492541952.

The previous prime is 51159223723. The next prime is 51159223783. The reversal of 51159223752 is 25732295115.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11710093 + ... + 11714460.

It is an arithmetic number, because the mean of its divisors is an integer number (2459578170).

Almost surely, 2^51159223752 is an apocalyptic number.

51159223752 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51159223752 is an abundant number, since it is smaller than the sum of its proper divisors (106253779128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51159223752 is a wasteful number, since it uses less digits than its factorization.

51159223752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23424582 (or 23424578 counting only the distinct ones).

The product of its digits is 189000, while the sum is 42.

It can be divided in two parts, 51159 and 223752, that added together give a triangular number (274911 = T₇₄₁).

The spelling of 51159223752 in words is "fifty-one billion, one hundred fifty-nine million, two hundred twenty-three thousand, seven hundred fifty-two".