19746064776 has 64 divisors (see below), whose sum is σ = 51426446400. Its totient is φ = 6312627200.

The previous prime is 19746064759. The next prime is 19746064777. The reversal of 19746064776 is 67746064791.

It is not an unprimeable number, because it can be changed into a prime (19746064777) 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, 112005 + ... + 228116.

It is an arithmetic number, because the mean of its divisors is an integer number (803538225).

Almost surely, 2^19746064776 is an apocalyptic number.

It is an amenable number.

19746064776 is an abundant number, since it is smaller than the sum of its proper divisors (31680381624).

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

19746064776 is a wasteful number, since it uses less digits than its factorization.

19746064776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340230 (or 340226 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 19746064776 in words is "nineteen billion, seven hundred forty-six million, sixty-four thousand, seven hundred seventy-six".