345665457723 has 8 divisors (see below), whose sum is σ = 487998293328. Its totient is φ = 216888130304.

The previous prime is 345665457673. The next prime is 345665457763. The reversal of 345665457723 is 327754566543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345665457723 - 2⁶ = 345665457659 is a prime.

It is a super-2 number, since 2×345665457723² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345665457763) 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 7 ways as a sum of consecutive naturals, for example, 3388876986 + ... + 3388877087.

It is an arithmetic number, because the mean of its divisors is an integer number (60999786666).

Almost surely, 2^345665457723 is an apocalyptic number.

345665457723 is a deficient number, since it is larger than the sum of its proper divisors (142332835605).

345665457723 is a wasteful number, since it uses less digits than its factorization.

345665457723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6777754093.

The product of its digits is 63504000, while the sum is 57.

The spelling of 345665457723 in words is "three hundred forty-five billion, six hundred sixty-five million, four hundred fifty-seven thousand, seven hundred twenty-three".