73437823413 has 12 divisors (see below), whose sum is σ = 107529964620. Its totient is φ = 48287883456.

The previous prime is 73437823367. The next prime is 73437823421. The reversal of 73437823413 is 31432873437.

73437823413 is a `hidden beast` number, since 7 + 34 + 378 + 234 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32691171249 + 40746652164 = 180807^2 + 201858^2 .

It is not a de Polignac number, because 73437823413 - 2¹⁰ = 73437822389 is a prime.

It is a super-2 number, since 2×73437823413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73437823423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55888098 + ... + 55889411.

It is an arithmetic number, because the mean of its divisors is an integer number (8960830385).

Almost surely, 2^73437823413 is an apocalyptic number.

73437823413 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

73437823413 is a deficient number, since it is larger than the sum of its proper divisors (34092141207).

73437823413 is a wasteful number, since it uses less digits than its factorization.

73437823413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111777588 (or 111777585 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The spelling of 73437823413 in words is "seventy-three billion, four hundred thirty-seven million, eight hundred twenty-three thousand, four hundred thirteen".