2321758378342 has 16 divisors (see below), whose sum is σ = 3752294495040. Its totient is φ = 1071077438592.

The previous prime is 2321758378321. The next prime is 2321758378349. The reversal of 2321758378342 is 2438738571232.

It is a super-2 number, since 2×2321758378342² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321758378349) 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, 20916558 + ... + 21027265.

It is an arithmetic number, because the mean of its divisors is an integer number (234518405940).

Almost surely, 2^{2321758378342} is an apocalyptic number.

2321758378342 is a deficient number, since it is larger than the sum of its proper divisors (1430536116698).

2321758378342 is a wasteful number, since it uses less digits than its factorization.

2321758378342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41945967.

The product of its digits is 13547520, while the sum is 55.

The spelling of 2321758378342 in words is "two trillion, three hundred twenty-one billion, seven hundred fifty-eight million, three hundred seventy-eight thousand, three hundred forty-two".