19706925056 has 312 divisors, whose sum is σ = 50364820800. Its totient is φ = 7702216704.

The previous prime is 19706925053. The next prime is 19706925101. The reversal of 19706925056 is 65052960791.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19706924995 and 19706925013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19706925053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237432791 + ... + 237432873.

Almost surely, 2^19706925056 is an apocalyptic number.

19706925056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19706925056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25182410400).

19706925056 is an abundant number, since it is smaller than the sum of its proper divisors (30657895744).

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

19706925056 is an frugal number, since it uses more digits than its factorization.

19706925056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 19706925056 in words is "nineteen billion, seven hundred six million, nine hundred twenty-five thousand, fifty-six".