40870551181 has 2 divisors, whose sum is σ = 40870551182. Its totient is φ = 40870551180.

The previous prime is 40870551133. The next prime is 40870551193. The reversal of 40870551181 is 18115507804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21419786025 + 19450765156 = 146355^2 + 139466^2 .

It is a cyclic number.

It is not a de Polignac number, because 40870551181 - 2⁷ = 40870551053 is a prime.

It is a super-2 number, since 2×40870551181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40870551481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20435275590 + 20435275591.

It is an arithmetic number, because the mean of its divisors is an integer number (20435275591).

Almost surely, 2^40870551181 is an apocalyptic number.

It is an amenable number.

40870551181 is a deficient number, since it is larger than the sum of its proper divisors (1).

40870551181 is an equidigital number, since it uses as much as digits as its factorization.

40870551181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 40.

The spelling of 40870551181 in words is "forty billion, eight hundred seventy million, five hundred fifty-one thousand, one hundred eighty-one".