19621497007 has 8 divisors (see below), whose sum is σ = 22441975200. Its totient is φ = 16805370624.

The previous prime is 19621497001. The next prime is 19621497017. The reversal of 19621497007 is 70079412691.

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

It is not a de Polignac number, because 19621497007 - 2¹⁹ = 19620972719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19621497001) 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, 1078282 + ... + 1096327.

It is an arithmetic number, because the mean of its divisors is an integer number (2805246900).

Almost surely, 2^19621497007 is an apocalyptic number.

19621497007 is a deficient number, since it is larger than the sum of its proper divisors (2820478193).

19621497007 is a wasteful number, since it uses less digits than its factorization.

19621497007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175905.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 19621497007 in words is "nineteen billion, six hundred twenty-one million, four hundred ninety-seven thousand, seven".