73381019553 has 80 divisors (see below), whose sum is σ = 118841158656. Its totient is φ = 44990225280.

The previous prime is 73381019531. The next prime is 73381019561. The reversal of 73381019553 is 35591018337.

73381019553 is a `hidden beast` number, since 7 + 3 + 3 + 81 + 0 + 19 + 553 = 666.

It is not a de Polignac number, because 73381019553 - 2¹⁴ = 73381003169 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 73381019499 and 73381019508.

It is not an unprimeable number, because it can be changed into a prime (73381019053) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9063175 + ... + 9071267.

Almost surely, 2^73381019553 is an apocalyptic number.

It is an amenable number.

73381019553 is a deficient number, since it is larger than the sum of its proper divisors (45460139103).

73381019553 is a wasteful number, since it uses less digits than its factorization.

73381019553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316 (or 8307 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 73381019553 in words is "seventy-three billion, three hundred eighty-one million, nineteen thousand, five hundred fifty-three".