76400860049 has 2 divisors, whose sum is σ = 76400860050. Its totient is φ = 76400860048.

The previous prime is 76400860031. The next prime is 76400860099. The reversal of 76400860049 is 94006800467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72896220049 + 3504640000 = 269993^2 + 59200^2 .

It is an emirp because it is prime and its reverse (94006800467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76400860049 - 2²⁴ = 76384082833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76400859991 and 76400860009.

It is not a weakly prime, because it can be changed into another prime (76400860099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38200430024 + 38200430025.

It is an arithmetic number, because the mean of its divisors is an integer number (38200430025).

Almost surely, 2^76400860049 is an apocalyptic number.

It is an amenable number.

76400860049 is a deficient number, since it is larger than the sum of its proper divisors (1).

76400860049 is an equidigital number, since it uses as much as digits as its factorization.

76400860049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 76400860049 in words is "seventy-six billion, four hundred million, eight hundred sixty thousand, forty-nine".