19451040937824 has 48 divisors (see below), whose sum is σ = 51063867853488. Its totient is φ = 6483059945472.

The previous prime is 19451040937763. The next prime is 19451040937829. The reversal of 19451040937824 is 42873904015491.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19451040937829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8684137 + ... + 10691880.

It is an arithmetic number, because the mean of its divisors is an integer number (1063830580281).

Almost surely, 2^{19451040937824} is an apocalyptic number.

It is an amenable number.

19451040937824 is an abundant number, since it is smaller than the sum of its proper divisors (31612826915664).

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

19451040937824 is a wasteful number, since it uses less digits than its factorization.

19451040937824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19386487 (or 19386479 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 19451040937824 in words is "nineteen trillion, four hundred fifty-one billion, forty million, nine hundred thirty-seven thousand, eight hundred twenty-four".