1308640534078 has 8 divisors (see below), whose sum is σ = 1990608136560. Its totient is φ = 645104488560.

The previous prime is 1308640534073. The next prime is 1308640534079. The reversal of 1308640534078 is 8704350468031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308640534073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4607889063 + ... + 4607889346.

It is an arithmetic number, because the mean of its divisors is an integer number (248826017070).

Almost surely, 2^{1308640534078} is an apocalyptic number.

1308640534078 is a deficient number, since it is larger than the sum of its proper divisors (681967602482).

1308640534078 is an equidigital number, since it uses as much as digits as its factorization.

1308640534078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215778482.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 1308640534078 in words is "one trillion, three hundred eight billion, six hundred forty million, five hundred thirty-four thousand, seventy-eight".