73977092789 has 2 divisors, whose sum is σ = 73977092790. Its totient is φ = 73977092788.

The previous prime is 73977092767. The next prime is 73977092821. The reversal of 73977092789 is 98729077937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51651652900 + 22325439889 = 227270^2 + 149417^2 .

It is a cyclic number.

It is not a de Polignac number, because 73977092789 - 2²⁴ = 73960315573 is a prime.

It is a super-2 number, since 2×73977092789² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73977092089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36988546394 + 36988546395.

It is an arithmetic number, because the mean of its divisors is an integer number (36988546395).

Almost surely, 2^73977092789 is an apocalyptic number.

It is an amenable number.

73977092789 is a deficient number, since it is larger than the sum of its proper divisors (1).

73977092789 is an equidigital number, since it uses as much as digits as its factorization.

73977092789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84015792, while the sum is 68.

The spelling of 73977092789 in words is "seventy-three billion, nine hundred seventy-seven million, ninety-two thousand, seven hundred eighty-nine".