40244437056261 has 32 divisors (see below), whose sum is σ = 56732116480000. Its totient is φ = 25305633983808.

The previous prime is 40244437056251. The next prime is 40244437056277. The reversal of 40244437056261 is 16265073444204.

It is not a de Polignac number, because 40244437056261 - 2⁹ = 40244437055749 is a prime.

It is a super-2 number, since 2×40244437056261² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40244437056261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40244437056221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715263216 + ... + 715319478.

It is an arithmetic number, because the mean of its divisors is an integer number (1772878640000).

Almost surely, 2^{40244437056261} is an apocalyptic number.

It is an amenable number.

40244437056261 is a deficient number, since it is larger than the sum of its proper divisors (16487679423739).

40244437056261 is a wasteful number, since it uses less digits than its factorization.

40244437056261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111313.

The product of its (nonzero) digits is 3870720, while the sum is 48.

The spelling of 40244437056261 in words is "forty trillion, two hundred forty-four billion, four hundred thirty-seven million, fifty-six thousand, two hundred sixty-one".