19902872480 has 48 divisors (see below), whose sum is σ = 47037957120. Its totient is φ = 7958199552.

The previous prime is 19902872471. The next prime is 19902872489. The reversal of 19902872480 is 8427820991.

It is an interprime number because it is at equal distance from previous prime (19902872471) and next prime (19902872489).

It is a super-2 number, since 2×19902872480² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19902872489) 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, 439037 + ... + 482243.

It is an arithmetic number, because the mean of its divisors is an integer number (979957440).

Almost surely, 2^19902872480 is an apocalyptic number.

19902872480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19902872480 is an abundant number, since it is smaller than the sum of its proper divisors (27135084640).

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

19902872480 is a wasteful number, since it uses less digits than its factorization.

19902872480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46101 (or 46093 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 19902872480 in words is "nineteen billion, nine hundred two million, eight hundred seventy-two thousand, four hundred eighty".