19956275466 has 32 divisors (see below), whose sum is σ = 40944052800. Its totient is φ = 6480635520.

The previous prime is 19956275461. The next prime is 19956275531. The reversal of 19956275466 is 66457265991.

It is not an unprimeable number, because it can be changed into a prime (19956275461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117205 + ... + 231623.

It is an arithmetic number, because the mean of its divisors is an integer number (1279501650).

Almost surely, 2^19956275466 is an apocalyptic number.

19956275466 is an abundant number, since it is smaller than the sum of its proper divisors (20987777334).

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

19956275466 is a wasteful number, since it uses less digits than its factorization.

19956275466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115174.

The product of its digits is 24494400, while the sum is 60.

The spelling of 19956275466 in words is "nineteen billion, nine hundred fifty-six million, two hundred seventy-five thousand, four hundred sixty-six".