40179029491 has 8 divisors (see below), whose sum is σ = 42664406400. Its totient is φ = 37707197568.

The previous prime is 40179029483. The next prime is 40179029509. The reversal of 40179029491 is 19492097104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40179029491 - 2³ = 40179029483 is a prime.

It is a super-2 number, since 2×40179029491² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40179029431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3380131 + ... + 3391996.

It is an arithmetic number, because the mean of its divisors is an integer number (5333050800).

Almost surely, 2^40179029491 is an apocalyptic number.

40179029491 is a deficient number, since it is larger than the sum of its proper divisors (2485376909).

40179029491 is a wasteful number, since it uses less digits than its factorization.

40179029491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772493.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 40179029491 in words is "forty billion, one hundred seventy-nine million, twenty-nine thousand, four hundred ninety-one".