73686380537 has 16 divisors (see below), whose sum is σ = 91884668544. Its totient is φ = 57408000000.

The previous prime is 73686380501. The next prime is 73686380561. The reversal of 73686380537 is 73508368637.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73686380537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73686380597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380537 + ... + 540537.

It is an arithmetic number, because the mean of its divisors is an integer number (5742791784).

Almost surely, 2^73686380537 is an apocalyptic number.

73686380537 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

73686380537 is a deficient number, since it is larger than the sum of its proper divisors (18198288007).

73686380537 is a wasteful number, since it uses less digits than its factorization.

73686380537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166000.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 73686380537 in words is "seventy-three billion, six hundred eighty-six million, three hundred eighty thousand, five hundred thirty-seven".