19867774480 has 80 divisors (see below), whose sum is σ = 46498523904. Its totient is φ = 7894656000.

The previous prime is 19867774477. The next prime is 19867774483. The reversal of 19867774480 is 8447776891.

It is an interprime number because it is at equal distance from previous prime (19867774477) and next prime (19867774483).

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (19867774483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9295972 + ... + 9298108.

Almost surely, 2^19867774480 is an apocalyptic number.

19867774480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19867774480 is an abundant number, since it is smaller than the sum of its proper divisors (26630749424).

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

19867774480 is a wasteful number, since it uses less digits than its factorization.

19867774480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 61.

The spelling of 19867774480 in words is "nineteen billion, eight hundred sixty-seven million, seven hundred seventy-four thousand, four hundred eighty".