19887416276 has 24 divisors (see below), whose sum is σ = 42834435840. Its totient is φ = 7867549152.

The previous prime is 19887416203. The next prime is 19887416291. The reversal of 19887416276 is 67261478891.

It is a super-2 number, since 2×19887416276² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27317516 + ... + 27318243.

It is an arithmetic number, because the mean of its divisors is an integer number (1784768160).

Almost surely, 2^19887416276 is an apocalyptic number.

It is an amenable number.

19887416276 is an abundant number, since it is smaller than the sum of its proper divisors (22947019564).

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

19887416276 is a wasteful number, since it uses less digits than its factorization.

19887416276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54635783 (or 54635781 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 59.

The spelling of 19887416276 in words is "nineteen billion, eight hundred eighty-seven million, four hundred sixteen thousand, two hundred seventy-six".