351213290778 has 16 divisors (see below), whose sum is σ = 802773236160. Its totient is φ = 100346654496.

The previous prime is 351213290767. The next prime is 351213290789. The reversal of 351213290778 is 877092312153.

It is an interprime number because it is at equal distance from previous prime (351213290767) and next prime (351213290789).

It is a super-2 number, since 2×351213290778² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4181110563 + ... + 4181110646.

It is an arithmetic number, because the mean of its divisors is an integer number (50173327260).

Almost surely, 2^351213290778 is an apocalyptic number.

351213290778 is an abundant number, since it is smaller than the sum of its proper divisors (451559945382).

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

351213290778 is a wasteful number, since it uses less digits than its factorization.

351213290778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8362221221.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 351213290778 in words is "three hundred fifty-one billion, two hundred thirteen million, two hundred ninety thousand, seven hundred seventy-eight".