351099446778 has 96 divisors (see below), whose sum is σ = 833790827520. Its totient is φ = 109134915840.

The previous prime is 351099446767. The next prime is 351099446791. The reversal of 351099446778 is 877644990153.

351099446778 is a `hidden beast` number, since 3 + 5 + 10 + 9 + 94 + 467 + 78 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10890663 + ... + 10922853.

It is an arithmetic number, because the mean of its divisors is an integer number (8685321120).

Almost surely, 2^351099446778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351099446778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416895413760).

351099446778 is an abundant number, since it is smaller than the sum of its proper divisors (482691380742).

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

351099446778 is a wasteful number, since it uses less digits than its factorization.

351099446778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32437 (or 32322 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 351099446778 in words is "three hundred fifty-one billion, ninety-nine million, four hundred forty-six thousand, seven hundred seventy-eight".