40191590125221 has 32 divisors (see below), whose sum is σ = 58614759447552. Its totient is φ = 24422816288640.

The previous prime is 40191590125207. The next prime is 40191590125231. The reversal of 40191590125221 is 12252109519104.

It is not a de Polignac number, because 40191590125221 - 2⁶ = 40191590125157 is a prime.

It is a super-3 number, since 3×40191590125221³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40191590125231) 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, 165075975 + ... + 165319268.

It is an arithmetic number, because the mean of its divisors is an integer number (1831711232736).

Almost surely, 2^{40191590125221} is an apocalyptic number.

40191590125221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40191590125221 is a deficient number, since it is larger than the sum of its proper divisors (18423169322331).

40191590125221 is a wasteful number, since it uses less digits than its factorization.

40191590125221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330395353.

The product of its (nonzero) digits is 64800, while the sum is 42.

The spelling of 40191590125221 in words is "forty trillion, one hundred ninety-one billion, five hundred ninety million, one hundred twenty-five thousand, two hundred twenty-one".