40172502542078 has 8 divisors (see below), whose sum is σ = 60259653116760. Its totient is φ = 20085951503160.

The previous prime is 40172502542047. The next prime is 40172502542167. The reversal of 40172502542078 is 87024520527104.

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

It is a super-2 number, since 2×40172502542078² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149716388 + ... + 149984471.

It is an arithmetic number, because the mean of its divisors is an integer number (7532456639595).

Almost surely, 2^{40172502542078} is an apocalyptic number.

40172502542078 is a deficient number, since it is larger than the sum of its proper divisors (20087150574682).

40172502542078 is a wasteful number, since it uses less digits than its factorization.

40172502542078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299767882.

The product of its (nonzero) digits is 1254400, while the sum is 47.

The spelling of 40172502542078 in words is "forty trillion, one hundred seventy-two billion, five hundred two million, five hundred forty-two thousand, seventy-eight".