351661794550 has 48 divisors (see below), whose sum is σ = 713619169200. Its totient is φ = 127865292800.

The previous prime is 351661794479. The next prime is 351661794551. The reversal of 351661794550 is 55497166153.

It is a super-2 number, since 2×351661794550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351661794551) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7946886 + ... + 7991014.

It is an arithmetic number, because the mean of its divisors is an integer number (14867066025).

Almost surely, 2^351661794550 is an apocalyptic number.

351661794550 is an abundant number, since it is smaller than the sum of its proper divisors (361957374650).

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

351661794550 is a wasteful number, since it uses less digits than its factorization.

351661794550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58641 (or 58636 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 351661794550 in words is "three hundred fifty-one billion, six hundred sixty-one million, seven hundred ninety-four thousand, five hundred fifty".