19077104640 has 176 divisors, whose sum is σ = 66564509760. Its totient is φ = 4624711680.

The previous prime is 19077104633. The next prime is 19077104647. The reversal of 19077104640 is 4640177091.

It is an interprime number because it is at equal distance from previous prime (19077104633) and next prime (19077104647).

It is a tau number, because it is divible by the number of its divisors (176).

It is not an unprimeable number, because it can be changed into a prime (19077104647) 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, 112506 + ... + 225414.

Almost surely, 2^19077104640 is an apocalyptic number.

19077104640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19077104640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33282254880).

19077104640 is an abundant number, since it is smaller than the sum of its proper divisors (47487405120).

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

19077104640 is a wasteful number, since it uses less digits than its factorization.

19077104640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112948 (or 112930 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 19077104640 in words is "nineteen billion, seventy-seven million, one hundred four thousand, six hundred forty".