11613623538 has 32 divisors (see below), whose sum is σ = 25361540352. Its totient is φ = 3516123600.

The previous prime is 11613623507. The next prime is 11613623557. The reversal of 11613623538 is 83532631611.

It is a junction number, because it is equal to n+sod(n) for n = 11613623496 and 11613623505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4228 + ... + 152463.

It is an arithmetic number, because the mean of its divisors is an integer number (792548136).

Almost surely, 2^11613623538 is an apocalyptic number.

11613623538 is an abundant number, since it is smaller than the sum of its proper divisors (13747916814).

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

11613623538 is a wasteful number, since it uses less digits than its factorization.

11613623538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157830.

The product of its digits is 77760, while the sum is 39.

The spelling of 11613623538 in words is "eleven billion, six hundred thirteen million, six hundred twenty-three thousand, five hundred thirty-eight".