76451493857 has 2 divisors, whose sum is σ = 76451493858. Its totient is φ = 76451493856.

The previous prime is 76451493847. The next prime is 76451493889. The reversal of 76451493857 is 75839415467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66023816401 + 10427677456 = 256951^2 + 102116^2 .

It is a cyclic number.

It is not a de Polignac number, because 76451493857 - 2¹⁰ = 76451492833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76451493796 and 76451493805.

It is not a weakly prime, because it can be changed into another prime (76451493847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38225746928 + 38225746929.

It is an arithmetic number, because the mean of its divisors is an integer number (38225746929).

Almost surely, 2^76451493857 is an apocalyptic number.

It is an amenable number.

76451493857 is a deficient number, since it is larger than the sum of its proper divisors (1).

76451493857 is an equidigital number, since it uses as much as digits as its factorization.

76451493857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 59.

The spelling of 76451493857 in words is "seventy-six billion, four hundred fifty-one million, four hundred ninety-three thousand, eight hundred fifty-seven".