40572555261 has 16 divisors (see below), whose sum is σ = 62569726464. Its totient is φ = 22904987184.

The previous prime is 40572555251. The next prime is 40572555307. The reversal of 40572555261 is 16255527504.

It is not a de Polignac number, because 40572555261 - 2¹¹ = 40572553213 is a prime.

It is a super-2 number, since 2×40572555261² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40572555251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11636971 + ... + 11640456.

It is an arithmetic number, because the mean of its divisors is an integer number (3910607904).

Almost surely, 2^40572555261 is an apocalyptic number.

It is an amenable number.

40572555261 is a deficient number, since it is larger than the sum of its proper divisors (21997171203).

40572555261 is a wasteful number, since it uses less digits than its factorization.

40572555261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23277520.

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 40572555261 in words is "forty billion, five hundred seventy-two million, five hundred fifty-five thousand, two hundred sixty-one".