16135236556 has 6 divisors (see below), whose sum is σ = 28236663980. Its totient is φ = 8067618276.

The previous prime is 16135236553. The next prime is 16135236569. The reversal of 16135236556 is 65563253161.

It is a super-2 number, since 2×16135236556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16135236553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2016904566 + ... + 2016904573.

Almost surely, 2^16135236556 is an apocalyptic number.

It is an amenable number.

16135236556 is a deficient number, since it is larger than the sum of its proper divisors (12101427424).

16135236556 is a wasteful number, since it uses less digits than its factorization.

16135236556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033809143 (or 4033809141 counting only the distinct ones).

The product of its digits is 486000, while the sum is 43.

The spelling of 16135236556 in words is "sixteen billion, one hundred thirty-five million, two hundred thirty-six thousand, five hundred fifty-six".