17970988511 has 8 divisors (see below), whose sum is σ = 21246489120. Its totient is φ = 14872542048.

The previous prime is 17970988487. The next prime is 17970988523. The reversal of 17970988511 is 11588907971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17970988511 - 2²² = 17966794207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17970988571) 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, 44263316 + ... + 44263721.

It is an arithmetic number, because the mean of its divisors is an integer number (2655811140).

Almost surely, 2^17970988511 is an apocalyptic number.

17970988511 is a deficient number, since it is larger than the sum of its proper divisors (3275500609).

17970988511 is an equidigital number, since it uses as much as digits as its factorization.

17970988511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88527073.

The product of its (nonzero) digits is 1270080, while the sum is 56.

The spelling of 17970988511 in words is "seventeen billion, nine hundred seventy million, nine hundred eighty-eight thousand, five hundred eleven".