11742637438 has 24 divisors (see below), whose sum is σ = 20514562200. Its totient is φ = 5026453488.

The previous prime is 11742637429. The next prime is 11742637451. The reversal of 11742637438 is 83473624711.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8973 + ... + 153511.

It is an arithmetic number, because the mean of its divisors is an integer number (854773425).

Almost surely, 2^11742637438 is an apocalyptic number.

11742637438 is a deficient number, since it is larger than the sum of its proper divisors (8771924762).

11742637438 is a wasteful number, since it uses less digits than its factorization.

11742637438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145384 (or 145377 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The spelling of 11742637438 in words is "eleven billion, seven hundred forty-two million, six hundred thirty-seven thousand, four hundred thirty-eight".