40137447832221 has 32 divisors (see below), whose sum is σ = 57201022091520. Its totient is φ = 24991118297600.

The previous prime is 40137447832169. The next prime is 40137447832271. The reversal of 40137447832221 is 12223874473104.

It is a cyclic number.

It is not a de Polignac number, because 40137447832221 - 2⁹ = 40137447831709 is a prime.

It is a super-2 number, since 2×40137447832221² (a number of 28 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 (40137447832271) 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, 60973440 + ... + 61628201.

It is an arithmetic number, because the mean of its divisors is an integer number (1787531940360).

Almost surely, 2^{40137447832221} is an apocalyptic number.

It is an amenable number.

40137447832221 is a deficient number, since it is larger than the sum of its proper divisors (17063574259299).

40137447832221 is a wasteful number, since it uses less digits than its factorization.

40137447832221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122601797.

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 40137447832221 in words is "forty trillion, one hundred thirty-seven billion, four hundred forty-seven million, eight hundred thirty-two thousand, two hundred twenty-one".