351143209540 has 24 divisors (see below), whose sum is σ = 737431961112. Its totient is φ = 140451336960.

The previous prime is 351143209537. The next prime is 351143209591. The reversal of 351143209540 is 45902341153.

It can be written as a sum of positive squares in 4 ways, for example, as 12959090244 + 338184119296 = 113838^2 + 581536^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 351143209540.

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, 128952 + ... + 847888.

It is an arithmetic number, because the mean of its divisors is an integer number (30726331713).

Almost surely, 2^351143209540 is an apocalyptic number.

It is an amenable number.

351143209540 is an abundant number, since it is smaller than the sum of its proper divisors (386288751572).

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

351143209540 is a wasteful number, since it uses less digits than its factorization.

351143209540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743367 (or 743365 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 351143209540 in words is "three hundred fifty-one billion, one hundred forty-three million, two hundred nine thousand, five hundred forty".