40445172587 has 8 divisors (see below), whose sum is σ = 41393552640. Its totient is φ = 39497146920.

The previous prime is 40445172577. The next prime is 40445172629. The reversal of 40445172587 is 78527154404.

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 40445172587 - 2²⁰ = 40444124011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40445172517) 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, 149762 + ... + 321432.

It is an arithmetic number, because the mean of its divisors is an integer number (5174194080).

Almost surely, 2^40445172587 is an apocalyptic number.

40445172587 is a deficient number, since it is larger than the sum of its proper divisors (948380053).

40445172587 is a wasteful number, since it uses less digits than its factorization.

40445172587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177193.

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

The spelling of 40445172587 in words is "forty billion, four hundred forty-five million, one hundred seventy-two thousand, five hundred eighty-seven".