11436820838 has 4 divisors (see below), whose sum is σ = 17155231260. Its totient is φ = 5718410418.

The previous prime is 11436820781. The next prime is 11436820853. The reversal of 11436820838 is 83802863411.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×11436820838² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2859205208 + ... + 2859205211.

It is an arithmetic number, because the mean of its divisors is an integer number (4288807815).

Almost surely, 2^11436820838 is an apocalyptic number.

11436820838 is a deficient number, since it is larger than the sum of its proper divisors (5718410422).

11436820838 is an equidigital number, since it uses as much as digits as its factorization.

11436820838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718410421.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 11436820838 in words is "eleven billion, four hundred thirty-six million, eight hundred twenty thousand, eight hundred thirty-eight".