51613584059749 has 8 divisors (see below), whose sum is σ = 55714813378560. Its totient is φ = 47667118111536.

The previous prime is 51613584059671. The next prime is 51613584059759. The reversal of 51613584059749 is 94795048531615.

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

It is a de Polignac number, because none of the positive numbers 2^k-51613584059749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51613584059759) 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, 38690841957 + ... + 38690843290.

It is an arithmetic number, because the mean of its divisors is an integer number (6964351672320).

Almost surely, 2^{51613584059749} is an apocalyptic number.

It is an amenable number.

51613584059749 is a deficient number, since it is larger than the sum of its proper divisors (4101229318811).

51613584059749 is a wasteful number, since it uses less digits than its factorization.

51613584059749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77381685299.

The product of its (nonzero) digits is 163296000, while the sum is 67.

The spelling of 51613584059749 in words is "fifty-one trillion, six hundred thirteen billion, five hundred eighty-four million, fifty-nine thousand, seven hundred forty-nine".