2917603487681 has 12 divisors (see below), whose sum is σ = 3087000002772. Its totient is φ = 2757082942944.

The previous prime is 2917603487671. The next prime is 2917603487713. The reversal of 2917603487681 is 1867843067192.

It can be written as a sum of positive squares in 2 ways, for example, as 1023445839025 + 1894157648656 = 1011655^2 + 1376284^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2917603487681 is a prime.

It is a super-2 number, since 2×2917603487681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2917603487611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10035530 + ... + 10322163.

It is an arithmetic number, because the mean of its divisors is an integer number (257250000231).

Almost surely, 2^{2917603487681} is an apocalyptic number.

It is an amenable number.

2917603487681 is a deficient number, since it is larger than the sum of its proper divisors (169396515091).

2917603487681 is a wasteful number, since it uses less digits than its factorization.

2917603487681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20358128 (or 20358109 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 2917603487681 in words is "two trillion, nine hundred seventeen billion, six hundred three million, four hundred eighty-seven thousand, six hundred eighty-one".