351139777690 has 16 divisors (see below), whose sum is σ = 680670953928. Its totient is φ = 129651610176.

The previous prime is 351139777687. The next prime is 351139777717. The reversal of 351139777690 is 96777931153.

It can be written as a sum of positive squares in 4 ways, for example, as 150911271729 + 200228505961 = 388473^2 + 447469^2 .

It is a super-2 number, since 2×351139777690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350537477 + ... + 1350537736.

Almost surely, 2^351139777690 is an apocalyptic number.

351139777690 is a deficient number, since it is larger than the sum of its proper divisors (329531176238).

351139777690 is a wasteful number, since it uses less digits than its factorization.

351139777690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701075233.

The product of its (nonzero) digits is 7501410, while the sum is 58.

The spelling of 351139777690 in words is "three hundred fifty-one billion, one hundred thirty-nine million, seven hundred seventy-seven thousand, six hundred ninety".