19711192970 has 128 divisors (see below), whose sum is σ = 43147468800. Its totient is φ = 6337596672.

The previous prime is 19711192957. The next prime is 19711192981. The reversal of 19711192970 is 7929111791.

It is a super-2 number, since 2×19711192970² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38725076 + ... + 38725584.

It is an arithmetic number, because the mean of its divisors is an integer number (337089600).

Almost surely, 2^19711192970 is an apocalyptic number.

19711192970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19711192970 is an abundant number, since it is smaller than the sum of its proper divisors (23436275830).

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

19711192970 is a wasteful number, since it uses less digits than its factorization.

19711192970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 71442, while the sum is 47.

The spelling of 19711192970 in words is "nineteen billion, seven hundred eleven million, one hundred ninety-two thousand, nine hundred seventy".