19216977802 has 16 divisors (see below), whose sum is σ = 32813180352. Its totient is φ = 8355207520.

The previous prime is 19216977743. The next prime is 19216977809. The reversal of 19216977802 is 20877961291.

It is a self number, because there is not a number n which added to its sum of digits gives 19216977802.

It is not an unprimeable number, because it can be changed into a prime (19216977809) 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, 18988603 + ... + 18989614.

It is an arithmetic number, because the mean of its divisors is an integer number (2050823772).

Almost surely, 2^19216977802 is an apocalyptic number.

19216977802 is a deficient number, since it is larger than the sum of its proper divisors (13596202550).

19216977802 is a wasteful number, since it uses less digits than its factorization.

19216977802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37978253.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 19216977802 in words is "nineteen billion, two hundred sixteen million, nine hundred seventy-seven thousand, eight hundred two".