73666395131 has 24 divisors (see below), whose sum is σ = 86963169024. Its totient is φ = 62208412560.

The previous prime is 73666395119. The next prime is 73666395211. The reversal of 73666395131 is 13159366637.

It is not a de Polignac number, because 73666395131 - 2⁶ = 73666395067 is a prime.

It is a super-2 number, since 2×73666395131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73666395131.

It is not an unprimeable number, because it can be changed into a prime (73666395731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5361236 + ... + 5374958.

It is an arithmetic number, because the mean of its divisors is an integer number (3623465376).

Almost surely, 2^73666395131 is an apocalyptic number.

73666395131 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

73666395131 is a deficient number, since it is larger than the sum of its proper divisors (13296773893).

73666395131 is a wasteful number, since it uses less digits than its factorization.

73666395131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15351 (or 15344 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 50.

The spelling of 73666395131 in words is "seventy-three billion, six hundred sixty-six million, three hundred ninety-five thousand, one hundred thirty-one".