17940137040 has 160 divisors (see below), whose sum is σ = 70621551360. Its totient is φ = 4100599296.

The previous prime is 17940136993. The next prime is 17940137063. The reversal of 17940137040 is 4073104971.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 17940136986 and 17940137004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578139 + ... + 608378.

It is an arithmetic number, because the mean of its divisors is an integer number (441384696).

Almost surely, 2^17940137040 is an apocalyptic number.

17940137040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17940137040 is an abundant number, since it is smaller than the sum of its proper divisors (52681414320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17940137040 is a wasteful number, since it uses less digits than its factorization.

17940137040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186546 (or 1186534 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 17940137040 in words is "seventeen billion, nine hundred forty million, one hundred thirty-seven thousand, forty".