51000616001 has 4 divisors (see below), whose sum is σ = 53218034112. Its totient is φ = 48783197892.

The previous prime is 51000615973. The next prime is 51000616013. The reversal of 51000616001 is 10061600015.

It is a happy number.

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 not a de Polignac number, because 51000616001 - 2²⁶ = 50933507137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51000606001) 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, 1108709021 + ... + 1108709066.

It is an arithmetic number, because the mean of its divisors is an integer number (13304508528).

Almost surely, 2^51000616001 is an apocalyptic number.

It is an amenable number.

51000616001 is a deficient number, since it is larger than the sum of its proper divisors (2217418111).

51000616001 is a wasteful number, since it uses less digits than its factorization.

51000616001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217418110.

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 51000616001 in words is "fifty-one billion, six hundred sixteen thousand, one".