17861270040 has 128 divisors (see below), whose sum is σ = 60426432000. Its totient is φ = 4691896704.

The previous prime is 17861270029. The next prime is 17861270041. The reversal of 17861270040 is 4007216871.

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 = 17861269977 and 17861270004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17861270041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51060 + ... + 195779.

It is an arithmetic number, because the mean of its divisors is an integer number (472081500).

Almost surely, 2^17861270040 is an apocalyptic number.

17861270040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17861270040 is an abundant number, since it is smaller than the sum of its proper divisors (42565161960).

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

17861270040 is a wasteful number, since it uses less digits than its factorization.

17861270040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246926 (or 246916 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 17861270040 in words is "seventeen billion, eight hundred sixty-one million, two hundred seventy thousand, forty".