40253746356261 has 12 divisors (see below), whose sum is σ = 58147519856140. Its totient is φ = 26834344951680.

The previous prime is 40253746356217. The next prime is 40253746356319. The reversal of 40253746356261 is 16265364735204.

40253746356261 is a `hidden beast` number, since 4 + 0 + 2 + 5 + 3 + 7 + 4 + 6 + 3 + 5 + 626 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27789450264900 + 12464296091361 = 5271570^2 + 3530481^2 .

It is not a de Polignac number, because 40253746356261 - 2³³ = 40245156421669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40253746356198 and 40253746356207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40253746356361) 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, 123657796 + ... + 123982893.

Almost surely, 2^{40253746356261} is an apocalyptic number.

It is an amenable number.

40253746356261 is a deficient number, since it is larger than the sum of its proper divisors (17893773499879).

40253746356261 is a wasteful number, since it uses less digits than its factorization.

40253746356261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247658756 (or 247658753 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 54.

The spelling of 40253746356261 in words is "forty trillion, two hundred fifty-three billion, seven hundred forty-six million, three hundred fifty-six thousand, two hundred sixty-one".