349869535878 has 24 divisors (see below), whose sum is σ = 740912844312. Its totient is φ = 109761117504.

The previous prime is 349869535877. The next prime is 349869535931. The reversal of 349869535878 is 878535968943.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349869535871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5944551 + ... + 6003117.

It is an arithmetic number, because the mean of its divisors is an integer number (30871368513).

Almost surely, 2^349869535878 is an apocalyptic number.

349869535878 is an abundant number, since it is smaller than the sum of its proper divisors (391043308434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349869535878 is an frugal number, since it uses more digits than its factorization.

349869535878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117156 (or 58589 counting only the distinct ones).

The product of its digits is 1567641600, while the sum is 75.

The spelling of 349869535878 in words is "three hundred forty-nine billion, eight hundred sixty-nine million, five hundred thirty-five thousand, eight hundred seventy-eight".