51615579555233 has 4 divisors (see below), whose sum is σ = 51628590796800. Its totient is φ = 51602568313668.

The previous prime is 51615579555121. The next prime is 51615579555257. The reversal of 51615579555233 is 33255597551615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51615579555233 - 2²⁶ = 51615512446369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51615579555283) 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, 6505614833 + ... + 6505622766.

It is an arithmetic number, because the mean of its divisors is an integer number (12907147699200).

Almost surely, 2^{51615579555233} is an apocalyptic number.

It is an amenable number.

51615579555233 is a deficient number, since it is larger than the sum of its proper divisors (13011241567).

51615579555233 is a wasteful number, since it uses less digits than its factorization.

51615579555233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13011241566.

The product of its digits is 106312500, while the sum is 62.

The spelling of 51615579555233 in words is "fifty-one trillion, six hundred fifteen billion, five hundred seventy-nine million, five hundred fifty-five thousand, two hundred thirty-three".