19557596226 has 16 divisors (see below), whose sum is σ = 44703077184. Its totient is φ = 5587884624.

The previous prime is 19557596183. The next prime is 19557596257. The reversal of 19557596226 is 62269575591.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232828485 + ... + 232828568.

It is an arithmetic number, because the mean of its divisors is an integer number (2793942324).

Almost surely, 2^19557596226 is an apocalyptic number.

19557596226 is an abundant number, since it is smaller than the sum of its proper divisors (25145480958).

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

19557596226 is a wasteful number, since it uses less digits than its factorization.

19557596226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465657065.

The product of its digits is 10206000, while the sum is 57.

The spelling of 19557596226 in words is "nineteen billion, five hundred fifty-seven million, five hundred ninety-six thousand, two hundred twenty-six".