2640454252342 has 4 divisors (see below), whose sum is σ = 3960681378516. Its totient is φ = 1320227126170.

The previous prime is 2640454252321. The next prime is 2640454252399. The reversal of 2640454252342 is 2432524540462.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660113563084 + ... + 660113563087.

It is an arithmetic number, because the mean of its divisors is an integer number (990170344629).

Almost surely, 2^{2640454252342} is an apocalyptic number.

2640454252342 is a deficient number, since it is larger than the sum of its proper divisors (1320227126174).

2640454252342 is a wasteful number, since it uses less digits than its factorization.

2640454252342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320227126173.

The product of its (nonzero) digits is 1843200, while the sum is 43.

The spelling of 2640454252342 in words is "two trillion, six hundred forty billion, four hundred fifty-four million, two hundred fifty-two thousand, three hundred forty-two".