19666514070 has 240 divisors, whose sum is σ = 62530850448. Its totient is φ = 4420967040.

The previous prime is 19666514069. The next prime is 19666514081. The reversal of 19666514070 is 7041566691.

19666514070 = 8856² + 8857² + ... + 9099².

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2417029 + ... + 2425151.

Almost surely, 2^19666514070 is an apocalyptic number.

19666514070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19666514070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31265425224).

19666514070 is an abundant number, since it is smaller than the sum of its proper divisors (42864336378).

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

19666514070 is a wasteful number, since it uses less digits than its factorization.

19666514070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217 (or 8201 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 19666514070 in words is "nineteen billion, six hundred sixty-six million, five hundred fourteen thousand, seventy".