73727732077 has 2 divisors, whose sum is σ = 73727732078. Its totient is φ = 73727732076.

The previous prime is 73727732051. The next prime is 73727732093. The reversal of 73727732077 is 77023772737.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61133057001 + 12594675076 = 247251^2 + 112226^2 .

It is a cyclic number.

It is not a de Polignac number, because 73727732077 - 2²⁷ = 73593514349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73727730077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36863866038 + 36863866039.

It is an arithmetic number, because the mean of its divisors is an integer number (36863866039).

Almost surely, 2^73727732077 is an apocalyptic number.

It is an amenable number.

73727732077 is a deficient number, since it is larger than the sum of its proper divisors (1).

73727732077 is an equidigital number, since it uses as much as digits as its factorization.

73727732077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4235364, while the sum is 52.

The spelling of 73727732077 in words is "seventy-three billion, seven hundred twenty-seven million, seven hundred thirty-two thousand, seventy-seven".