40185570954 has 16 divisors (see below), whose sum is σ = 80554224960. Its totient is φ = 13364676480.

The previous prime is 40185570899. The next prime is 40185570977. The reversal of 40185570954 is 45907558104.

It is a happy number.

It is a super-2 number, since 2×40185570954² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7625607 + ... + 7630874.

It is an arithmetic number, because the mean of its divisors is an integer number (5034639060).

Almost surely, 2^40185570954 is an apocalyptic number.

40185570954 is an abundant number, since it is smaller than the sum of its proper divisors (40368654006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40185570954 is a wasteful number, since it uses less digits than its factorization.

40185570954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15256925.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 40185570954 in words is "forty billion, one hundred eighty-five million, five hundred seventy thousand, nine hundred fifty-four".