77670125447 has 2 divisors, whose sum is σ = 77670125448. Its totient is φ = 77670125446.

The previous prime is 77670125413. The next prime is 77670125513. The reversal of 77670125447 is 74452107677.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77670125447 - 2¹⁰ = 77670124423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77670125395 and 77670125404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77670125647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38835062723 + 38835062724.

It is an arithmetic number, because the mean of its divisors is an integer number (38835062724).

Almost surely, 2^77670125447 is an apocalyptic number.

77670125447 is a deficient number, since it is larger than the sum of its proper divisors (1).

77670125447 is an equidigital number, since it uses as much as digits as its factorization.

77670125447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304960, while the sum is 50.

The spelling of 77670125447 in words is "seventy-seven billion, six hundred seventy million, one hundred twenty-five thousand, four hundred forty-seven".