134640661323 has 8 divisors (see below), whose sum is σ = 205166722048. Its totient is φ = 76937520744.

The previous prime is 134640661319. The next prime is 134640661327. The reversal of 134640661323 is 323166046431.

It is an interprime number because it is at equal distance from previous prime (134640661319) and next prime (134640661327).

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

It is not a de Polignac number, because 134640661323 - 2² = 134640661319 is a prime.

It is a super-2 number, since 2×134640661323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134640661327) 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, 3205730011 + ... + 3205730052.

It is an arithmetic number, because the mean of its divisors is an integer number (25645840256).

Almost surely, 2^134640661323 is an apocalyptic number.

134640661323 is a deficient number, since it is larger than the sum of its proper divisors (70526060725).

134640661323 is an equidigital number, since it uses as much as digits as its factorization.

134640661323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411460073.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 134640661323 in words is "one hundred thirty-four billion, six hundred forty million, six hundred sixty-one thousand, three hundred twenty-three".