76619619663973 has 2 divisors, whose sum is σ = 76619619663974. Its totient is φ = 76619619663972.

The previous prime is 76619619663943. The next prime is 76619619664009. The reversal of 76619619663973 is 37936691691667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56123201537764 + 20496418126209 = 7491542^2 + 4527297^2 .

It is an emirp because it is prime and its reverse (37936691691667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76619619663973 - 2²⁹ = 76619082793061 is a prime.

It is a super-2 number, since 2×76619619663973² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76619619663893 and 76619619663902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76619619663943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38309809831986 + 38309809831987.

It is an arithmetic number, because the mean of its divisors is an integer number (38309809831987).

Almost surely, 2^{76619619663973} is an apocalyptic number.

It is an amenable number.

76619619663973 is a deficient number, since it is larger than the sum of its proper divisors (1).

76619619663973 is an equidigital number, since it uses as much as digits as its factorization.

76619619663973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2499898464, while the sum is 79.

The spelling of 76619619663973 in words is "seventy-six trillion, six hundred nineteen billion, six hundred nineteen million, six hundred sixty-three thousand, nine hundred seventy-three".