17712379356 has 144 divisors (see below), whose sum is σ = 51680740608. Its totient is φ = 4608990720.

The previous prime is 17712379331. The next prime is 17712379423. The reversal of 17712379356 is 65397321771.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 17712379299 and 17712379308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1365855 + ... + 1378761.

It is an arithmetic number, because the mean of its divisors is an integer number (358894032).

Almost surely, 2^17712379356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17712379356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25840370304).

17712379356 is an abundant number, since it is smaller than the sum of its proper divisors (33968361252).

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

17712379356 is a wasteful number, since it uses less digits than its factorization.

17712379356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13000 (or 12967 counting only the distinct ones).

The product of its digits is 1666980, while the sum is 51.

The spelling of 17712379356 in words is "seventeen billion, seven hundred twelve million, three hundred seventy-nine thousand, three hundred fifty-six".