51437579759 has 4 divisors (see below), whose sum is σ = 51480409920. Its totient is φ = 51394749600.

The previous prime is 51437579747. The next prime is 51437579771. The reversal of 51437579759 is 95797573415.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51437579747) and next prime (51437579771).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51437579759 is a prime.

It is a super-2 number, since 2×51437579759² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51437579159) 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, 21413279 + ... + 21415680.

It is an arithmetic number, because the mean of its divisors is an integer number (12870102480).

Almost surely, 2^51437579759 is an apocalyptic number.

51437579759 is a deficient number, since it is larger than the sum of its proper divisors (42830161).

51437579759 is a wasteful number, since it uses less digits than its factorization.

51437579759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42830160.

The product of its digits is 41674500, while the sum is 62.

The spelling of 51437579759 in words is "fifty-one billion, four hundred thirty-seven million, five hundred seventy-nine thousand, seven hundred fifty-nine".