40387373091 has 24 divisors (see below), whose sum is σ = 64789744560. Its totient is φ = 24853765248.

The previous prime is 40387373083. The next prime is 40387373113. The reversal of 40387373091 is 19037378304.

It is not a de Polignac number, because 40387373091 - 2³ = 40387373083 is a prime.

It is a super-2 number, since 2×40387373091² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40387373011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4420966 + ... + 4430091.

It is an arithmetic number, because the mean of its divisors is an integer number (2699572690).

Almost surely, 2^40387373091 is an apocalyptic number.

40387373091 is a deficient number, since it is larger than the sum of its proper divisors (24402371469).

40387373091 is a wasteful number, since it uses less digits than its factorization.

40387373091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8851092 (or 8851073 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 40387373091 in words is "forty billion, three hundred eighty-seven million, three hundred seventy-three thousand, ninety-one".