19407697057 has 8 divisors (see below), whose sum is σ = 22945060800. Its totient is φ = 16061542224.

The previous prime is 19407697031. The next prime is 19407697069. The reversal of 19407697057 is 75079670491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19407697057 - 2³¹ = 17260213409 is a prime.

It is a super-2 number, since 2×19407697057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19407696989 and 19407697007.

It is not an unprimeable number, because it can be changed into a prime (19407697087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47802007 + ... + 47802412.

It is an arithmetic number, because the mean of its divisors is an integer number (2868132600).

Almost surely, 2^19407697057 is an apocalyptic number.

It is an amenable number.

19407697057 is a deficient number, since it is larger than the sum of its proper divisors (3537363743).

19407697057 is an equidigital number, since it uses as much as digits as its factorization.

19407697057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95604455.

The product of its (nonzero) digits is 3333960, while the sum is 55.

The spelling of 19407697057 in words is "nineteen billion, four hundred seven million, six hundred ninety-seven thousand, fifty-seven".