17640468047 has 8 divisors (see below), whose sum is σ = 18803502000. Its totient is φ = 16491362944.

The previous prime is 17640468037. The next prime is 17640468073. The reversal of 17640468047 is 74086404671.

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 17640468047 - 2⁶ = 17640467983 is a prime.

It is a super-2 number, since 2×17640468047² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17640467992 and 17640468010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17640468017) 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, 3479597 + ... + 3484662.

It is an arithmetic number, because the mean of its divisors is an integer number (2350437750).

Almost surely, 2^17640468047 is an apocalyptic number.

17640468047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

17640468047 is a deficient number, since it is larger than the sum of its proper divisors (1163033953).

17640468047 is a wasteful number, since it uses less digits than its factorization.

17640468047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964425.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 17640468047 in words is "seventeen billion, six hundred forty million, four hundred sixty-eight thousand, forty-seven".