1138497343640 has 64 divisors (see below), whose sum is σ = 2579436286560. Its totient is φ = 452235985920.

The previous prime is 1138497343573. The next prime is 1138497343703. The reversal of 1138497343640 is 463437948311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7994660 + ... + 8135820.

Almost surely, 2^{1138497343640} is an apocalyptic number.

1138497343640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138497343640 is an abundant number, since it is smaller than the sum of its proper divisors (1440938942920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138497343640 is a wasteful number, since it uses less digits than its factorization.

1138497343640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142572 (or 142568 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 1138497343640 in words is "one trillion, one hundred thirty-eight billion, four hundred ninety-seven million, three hundred forty-three thousand, six hundred forty".