345235863778 has 16 divisors (see below), whose sum is σ = 560988643320. Its totient is φ = 159339627408.

The previous prime is 345235863773. The next prime is 345235863823. The reversal of 345235863778 is 877368532543.

It can be written as a sum of positive squares in 4 ways, for example, as 616379929 + 344619483849 = 24827^2 + 587043^2 .

It is not an unprimeable number, because it can be changed into a prime (345235863773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39280525 + ... + 39289312.

Almost surely, 2^345235863778 is an apocalyptic number.

345235863778 is a deficient number, since it is larger than the sum of its proper divisors (215752779542).

345235863778 is an equidigital number, since it uses as much as digits as its factorization.

345235863778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78569878 (or 78569852 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 61.

The spelling of 345235863778 in words is "three hundred forty-five billion, two hundred thirty-five million, eight hundred sixty-three thousand, seven hundred seventy-eight".