345446140666 has 16 divisors (see below), whose sum is σ = 579062711808. Its totient is φ = 153191192800.

The previous prime is 345446140661. The next prime is 345446140667. The reversal of 345446140666 is 666041644543.

It is a super-2 number, since 2×345446140666² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345446140661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191488090 + ... + 191489893.

It is an arithmetic number, because the mean of its divisors is an integer number (36191419488).

Almost surely, 2^345446140666 is an apocalyptic number.

345446140666 is a deficient number, since it is larger than the sum of its proper divisors (233616571142).

345446140666 is a wasteful number, since it uses less digits than its factorization.

345446140666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382978037.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 345446140666 in words is "three hundred forty-five billion, four hundred forty-six million, one hundred forty thousand, six hundred sixty-six".