19455796540 has 48 divisors (see below), whose sum is σ = 44656061184. Its totient is φ = 7088256000.

The previous prime is 19455796537. The next prime is 19455796589. The reversal of 19455796540 is 4569755491.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912411 + ... + 933490.

It is an arithmetic number, because the mean of its divisors is an integer number (930334608).

Almost surely, 2^19455796540 is an apocalyptic number.

19455796540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19455796540 is an abundant number, since it is smaller than the sum of its proper divisors (25200264644).

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

19455796540 is a wasteful number, since it uses less digits than its factorization.

19455796540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845958 (or 1845956 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 19455796540 in words is "nineteen billion, four hundred fifty-five million, seven hundred ninety-six thousand, five hundred forty".