345921481951 has 4 divisors (see below), whose sum is σ = 346446401400. Its totient is φ = 345396562504.

The previous prime is 345921481949. The next prime is 345921481967. The reversal of 345921481951 is 159184129543.

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

It is a cyclic number.

It is not a de Polignac number, because 345921481951 - 2¹ = 345921481949 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 (345921481981) 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, 262458736 + ... + 262460053.

It is an arithmetic number, because the mean of its divisors is an integer number (86611600350).

Almost surely, 2^345921481951 is an apocalyptic number.

345921481951 is a deficient number, since it is larger than the sum of its proper divisors (524919449).

345921481951 is an equidigital number, since it uses as much as digits as its factorization.

345921481951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524919448.

The product of its digits is 1555200, while the sum is 52.

The spelling of 345921481951 in words is "three hundred forty-five billion, nine hundred twenty-one million, four hundred eighty-one thousand, nine hundred fifty-one".