11621712347 has 18 divisors (see below), whose sum is σ = 13707173268. Its totient is φ = 9824788512.

The previous prime is 11621712341. The next prime is 11621712379. The reversal of 11621712347 is 74321712611.

It is not a de Polignac number, because 11621712347 - 2⁶ = 11621712283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11621712341) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 238868 + ... + 283374.

It is an arithmetic number, because the mean of its divisors is an integer number (761509626).

Almost surely, 2^11621712347 is an apocalyptic number.

11621712347 is a deficient number, since it is larger than the sum of its proper divisors (2085460921).

11621712347 is an frugal number, since it uses more digits than its factorization.

11621712347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44667 (or 44587 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The spelling of 11621712347 in words is "eleven billion, six hundred twenty-one million, seven hundred twelve thousand, three hundred forty-seven".