17970251442 has 64 divisors (see below), whose sum is σ = 42287543424. Its totient is φ = 5019056640.

The previous prime is 17970251441. The next prime is 17970251459. The reversal of 17970251442 is 24415207971.

It is a junction number, because it is equal to n+sod(n) for n = 17970251394 and 17970251403.

It is not an unprimeable number, because it can be changed into a prime (17970251441) 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, 565398 + ... + 596334.

It is an arithmetic number, because the mean of its divisors is an integer number (660742866).

Almost surely, 2^17970251442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17970251442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21143771712).

17970251442 is an abundant number, since it is smaller than the sum of its proper divisors (24317291982).

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

17970251442 is a wasteful number, since it uses less digits than its factorization.

17970251442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31643.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 17970251442 in words is "seventeen billion, nine hundred seventy million, two hundred fifty-one thousand, four hundred forty-two".