19715071700 has 36 divisors (see below), whose sum is σ = 45298280412. Its totient is φ = 7422144000.

The previous prime is 19715071699. The next prime is 19715071723. The reversal of 19715071700 is 717051791.

It can be written as a sum of positive squares in 6 ways, for example, as 1049500816 + 18665570884 = 32396^2 + 136622^2 .

It is a super-2 number, since 2×19715071700² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5796851 + ... + 5800250.

It is an arithmetic number, because the mean of its divisors is an integer number (1258285567).

Almost surely, 2^19715071700 is an apocalyptic number.

19715071700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19715071700 is an abundant number, since it is smaller than the sum of its proper divisors (25583208712).

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

19715071700 is a wasteful number, since it uses less digits than its factorization.

19715071700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11597132 (or 11597125 counting only the distinct ones).

The product of its (nonzero) digits is 15435, while the sum is 38.

The spelling of 19715071700 in words is "nineteen billion, seven hundred fifteen million, seventy-one thousand, seven hundred".