345425672777 has 2 divisors, whose sum is σ = 345425672778. Its totient is φ = 345425672776.

The previous prime is 345425672771. The next prime is 345425672951. The reversal of 345425672777 is 777276524543.

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., 266399467321 + 79026205456 = 516139^2 + 281116^2 .

It is a cyclic number.

It is not a de Polignac number, because 345425672777 - 2¹⁰ = 345425671753 is a prime.

It is not a weakly prime, because it can be changed into another prime (345425672771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172712836388 + 172712836389.

It is an arithmetic number, because the mean of its divisors is an integer number (172712836389).

Almost surely, 2^345425672777 is an apocalyptic number.

It is an amenable number.

345425672777 is a deficient number, since it is larger than the sum of its proper divisors (1).

345425672777 is an equidigital number, since it uses as much as digits as its factorization.

345425672777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69148800, while the sum is 59.

The spelling of 345425672777 in words is "three hundred forty-five billion, four hundred twenty-five million, six hundred seventy-two thousand, seven hundred seventy-seven".