73312749187 has 2 divisors, whose sum is σ = 73312749188. Its totient is φ = 73312749186.

The previous prime is 73312749151. The next prime is 73312749227. The reversal of 73312749187 is 78194721337.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73312749187 is a prime.

It is not a weakly prime, because it can be changed into another prime (73312749137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36656374593 + 36656374594.

It is an arithmetic number, because the mean of its divisors is an integer number (36656374594).

Almost surely, 2^73312749187 is an apocalyptic number.

73312749187 is a deficient number, since it is larger than the sum of its proper divisors (1).

73312749187 is an equidigital number, since it uses as much as digits as its factorization.

73312749187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The spelling of 73312749187 in words is "seventy-three billion, three hundred twelve million, seven hundred forty-nine thousand, one hundred eighty-seven".