19612275645 has 16 divisors (see below), whose sum is σ = 31391105472. Its totient is φ = 10456058880.

The previous prime is 19612275637. The next prime is 19612275659. The reversal of 19612275645 is 54657221691.

It is not a de Polignac number, because 19612275645 - 2³ = 19612275637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19612275594 and 19612275603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196171 + ... + 278760.

It is an arithmetic number, because the mean of its divisors is an integer number (1961944092).

Almost surely, 2^19612275645 is an apocalyptic number.

19612275645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19612275645 is a deficient number, since it is larger than the sum of its proper divisors (11778829827).

19612275645 is a wasteful number, since it uses less digits than its factorization.

19612275645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477692.

The product of its digits is 907200, while the sum is 48.

The spelling of 19612275645 in words is "nineteen billion, six hundred twelve million, two hundred seventy-five thousand, six hundred forty-five".