73390067998891 has 4 divisors (see below), whose sum is σ = 83874363427312. Its totient is φ = 62905772570472.

The previous prime is 73390067998771. The next prime is 73390067998963. The reversal of 73390067998891 is 19889976009337.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73390067998891 - 2²⁵ = 73390034444459 is a prime.

It is a super-2 number, since 2×73390067998891² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73390067998991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5242147714200 + ... + 5242147714213.

It is an arithmetic number, because the mean of its divisors is an integer number (20968590856828).

Almost surely, 2^{73390067998891} is an apocalyptic number.

73390067998891 is a deficient number, since it is larger than the sum of its proper divisors (10484295428421).

73390067998891 is a wasteful number, since it uses less digits than its factorization.

73390067998891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10484295428420.

The product of its (nonzero) digits is 1111065984, while the sum is 79.

The spelling of 73390067998891 in words is "seventy-three trillion, three hundred ninety billion, sixty-seven million, nine hundred ninety-eight thousand, eight hundred ninety-one".