11423705638 has 8 divisors (see below), whose sum is σ = 17136079560. Its totient is φ = 5711679120.

The previous prime is 11423705603. The next prime is 11423705653. The reversal of 11423705638 is 83650732411.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11423705638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23298 + ... + 152938.

It is an arithmetic number, because the mean of its divisors is an integer number (2142009945).

Almost surely, 2^11423705638 is an apocalyptic number.

11423705638 is a deficient number, since it is larger than the sum of its proper divisors (5712373922).

11423705638 is a wasteful number, since it uses less digits than its factorization.

11423705638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173702.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 11423705638 in words is "eleven billion, four hundred twenty-three million, seven hundred five thousand, six hundred thirty-eight".