73259134379840 has 28 divisors (see below), whose sum is σ = 174448313742756. Its totient is φ = 29303653751808.

The previous prime is 73259134379801. The next prime is 73259134379861. The reversal of 73259134379840 is 4897343195237.

It can be written as a sum of positive squares in 2 ways, for example, as 25452751485184 + 47806382894656 = 5045072^2 + 6914216^2 .

It is a super-2 number, since 2×73259134379840² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114467397149 + ... + 114467397788.

Almost surely, 2^{73259134379840} is an apocalyptic number.

It is an amenable number.

73259134379840 is an abundant number, since it is smaller than the sum of its proper divisors (101189179362916).

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

73259134379840 is a wasteful number, since it uses less digits than its factorization.

73259134379840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228934794954 (or 228934794944 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 65.

The spelling of 73259134379840 in words is "seventy-three trillion, two hundred fifty-nine billion, one hundred thirty-four million, three hundred seventy-nine thousand, eight hundred forty".