50615212961 has 4 divisors (see below), whose sum is σ = 50616322692. Its totient is φ = 50614103232.

The previous prime is 50615212919. The next prime is 50615212979. The reversal of 50615212961 is 16921251605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16921251605 = 5 ⋅3384250321.

It can be written as a sum of positive squares in 2 ways, for example, as 24989286400 + 25625926561 = 158080^2 + 160081^2 .

It is a cyclic number.

It is not a de Polignac number, because 50615212961 - 2¹⁸ = 50614950817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50615212061) 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, 483380 + ... + 578693.

It is an arithmetic number, because the mean of its divisors is an integer number (12654080673).

Almost surely, 2^50615212961 is an apocalyptic number.

It is an amenable number.

50615212961 is a deficient number, since it is larger than the sum of its proper divisors (1109731).

50615212961 is a wasteful number, since it uses less digits than its factorization.

50615212961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109730.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 50615212961 in words is "fifty billion, six hundred fifteen million, two hundred twelve thousand, nine hundred sixty-one".