19577147416 has 8 divisors (see below), whose sum is σ = 36707151420. Its totient is φ = 9788573704.

The previous prime is 19577147411. The next prime is 19577147417. The reversal of 19577147416 is 61474177591.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19577147411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223571706 + ... + 1223571721.

Almost surely, 2^19577147416 is an apocalyptic number.

It is an amenable number.

19577147416 is a deficient number, since it is larger than the sum of its proper divisors (17130004004).

19577147416 is a wasteful number, since it uses less digits than its factorization.

19577147416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447143433 (or 2447143429 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 52.

The spelling of 19577147416 in words is "nineteen billion, five hundred seventy-seven million, one hundred forty-seven thousand, four hundred sixteen".