351405457663 has 4 divisors (see below), whose sum is σ = 378436646728. Its totient is φ = 324374268600.

The previous prime is 351405457651. The next prime is 351405457693. The reversal of 351405457663 is 366754504153.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351405457663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351405457603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13515594513 + ... + 13515594538.

It is an arithmetic number, because the mean of its divisors is an integer number (94609161682).

Almost surely, 2^351405457663 is an apocalyptic number.

351405457663 is a deficient number, since it is larger than the sum of its proper divisors (27031189065).

351405457663 is a wasteful number, since it uses less digits than its factorization.

351405457663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27031189064.

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 351405457663 in words is "three hundred fifty-one billion, four hundred five million, four hundred fifty-seven thousand, six hundred sixty-three".