351042645561 has 4 divisors (see below), whose sum is σ = 468056860752. Its totient is φ = 234028430372.

The previous prime is 351042645539. The next prime is 351042645563. The reversal of 351042645561 is 165546240153.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 351042645561 - 2⁶ = 351042645497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (351042645563) 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, 58507107591 + ... + 58507107596.

It is an arithmetic number, because the mean of its divisors is an integer number (117014215188).

Almost surely, 2^351042645561 is an apocalyptic number.

It is an amenable number.

351042645561 is a deficient number, since it is larger than the sum of its proper divisors (117014215191).

351042645561 is a wasteful number, since it uses less digits than its factorization.

351042645561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117014215190.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 351042645561 in words is "three hundred fifty-one billion, forty-two million, six hundred forty-five thousand, five hundred sixty-one".