17426672640 has 352 divisors, whose sum is σ = 66702068160. Its totient is φ = 4289200128.

The previous prime is 17426672623. The next prime is 17426672687. The reversal of 17426672640 is 4627662471.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1792272 + ... + 1801968.

Almost surely, 2^17426672640 is an apocalyptic number.

17426672640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17426672640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33351034080).

17426672640 is an abundant number, since it is smaller than the sum of its proper divisors (49275395520).

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

17426672640 is a wasteful number, since it uses less digits than its factorization.

17426672640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744 (or 9720 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 17426672640 in words is "seventeen billion, four hundred twenty-six million, six hundred seventy-two thousand, six hundred forty".