19713070566 has 96 divisors (see below), whose sum is σ = 50759991360. Its totient is φ = 5409718272.

The previous prime is 19713070541. The next prime is 19713070591. The reversal of 19713070566 is 66507031791.

19713070566 is a `hidden beast` number, since 1 + 9 + 7 + 13 + 0 + 70 + 566 = 666.

It is an interprime number because it is at equal distance from previous prime (19713070541) and next prime (19713070591).

It is a super-2 number, since 2×19713070566² (a number of 21 digits) contains 22 as substring.

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, 691246 + ... + 719198.

It is an arithmetic number, because the mean of its divisors is an integer number (528749910).

Almost surely, 2^19713070566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19713070566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25379995680).

19713070566 is an abundant number, since it is smaller than the sum of its proper divisors (31046920794).

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

19713070566 is a wasteful number, since it uses less digits than its factorization.

19713070566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28190 (or 28187 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 19713070566 in words is "nineteen billion, seven hundred thirteen million, seventy thousand, five hundred sixty-six".