917212956053 has 4 divisors (see below), whose sum is σ = 917325963180. Its totient is φ = 917099948928.

The previous prime is 917212956031. The next prime is 917212956073. The reversal of 917212956053 is 350659212719.

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

It can be written as a sum of positive squares in 2 ways, for example, as 806292651844 + 110920304209 = 897938^2 + 333047^2 .

It is a cyclic number.

It is not a de Polignac number, because 917212956053 - 2²⁰ = 917211907477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 917212955992 and 917212956010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917212956073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56491388 + ... + 56507621.

It is an arithmetic number, because the mean of its divisors is an integer number (229331490795).

Almost surely, 2^917212956053 is an apocalyptic number.

It is an amenable number.

917212956053 is a deficient number, since it is larger than the sum of its proper divisors (113007127).

917212956053 is a wasteful number, since it uses less digits than its factorization.

917212956053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113007126.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 917212956053 in words is "nine hundred seventeen billion, two hundred twelve million, nine hundred fifty-six thousand, fifty-three".