73776427521113 has 2 divisors, whose sum is σ = 73776427521114. Its totient is φ = 73776427521112.

The previous prime is 73776427521061. The next prime is 73776427521197. The reversal of 73776427521113 is 31112572467737.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61618151176729 + 12158276344384 = 7849723^2 + 3486872^2 .

It is a cyclic number.

It is not a de Polignac number, because 73776427521113 - 2⁸ = 73776427520857 is a prime.

It is a super-2 number, since 2×73776427521113² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73776427521613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36888213760556 + 36888213760557.

It is an arithmetic number, because the mean of its divisors is an integer number (36888213760557).

Almost surely, 2^{73776427521113} is an apocalyptic number.

It is an amenable number.

73776427521113 is a deficient number, since it is larger than the sum of its proper divisors (1).

73776427521113 is an equidigital number, since it uses as much as digits as its factorization.

73776427521113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10372320, while the sum is 56.

The spelling of 73776427521113 in words is "seventy-three trillion, seven hundred seventy-six billion, four hundred twenty-seven million, five hundred twenty-one thousand, one hundred thirteen".