40917602961 has 9 divisors (see below), whose sum is σ = 59104080841. Its totient is φ = 27277997412.

The previous prime is 40917602933. The next prime is 40917602993. The reversal of 40917602961 is 16920671904.

The square root of 40917602961 is 202281.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 40917602961 - 2⁹ = 40917602449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40917602161) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 573130 + ... + 640556.

Almost surely, 2^40917602961 is an apocalyptic number.

40917602961 is the 202281-st square number.

40917602961 is the 101141-st centered octagonal number.

It is an amenable number.

40917602961 is a deficient number, since it is larger than the sum of its proper divisors (18186477880).

40917602961 is an frugal number, since it uses more digits than its factorization.

40917602961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134860 (or 67430 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 40917602961 in words is "forty billion, nine hundred seventeen million, six hundred two thousand, nine hundred sixty-one".