617947159031 has 4 divisors (see below), whose sum is σ = 618056749200. Its totient is φ = 617837568864.

The previous prime is 617947159021. The next prime is 617947159051. The reversal of 617947159031 is 130951749716.

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

It is a cyclic number.

It is not a de Polignac number, because 617947159031 - 2¹⁰ = 617947158007 is a prime.

It is a super-2 number, since 2×617947159031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617947159001) 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, 54786626 + ... + 54797903.

It is an arithmetic number, because the mean of its divisors is an integer number (154514187300).

Almost surely, 2^617947159031 is an apocalyptic number.

617947159031 is a deficient number, since it is larger than the sum of its proper divisors (109590169).

617947159031 is a wasteful number, since it uses less digits than its factorization.

617947159031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109590168.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 617947159031 in words is "six hundred seventeen billion, nine hundred forty-seven million, one hundred fifty-nine thousand, thirty-one".