16135647784 has 32 divisors (see below), whose sum is σ = 32077321920. Its totient is φ = 7582978816.

The previous prime is 16135647727. The next prime is 16135647791. The reversal of 16135647784 is 48774653161.

It is a happy number.

It is a super-2 number, since 2×16135647784² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21207 + ... + 180889.

It is an arithmetic number, because the mean of its divisors is an integer number (1002416310).

Almost surely, 2^16135647784 is an apocalyptic number.

It is an amenable number.

16135647784 is a deficient number, since it is larger than the sum of its proper divisors (15941674136).

16135647784 is a wasteful number, since it uses less digits than its factorization.

16135647784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160449 (or 160445 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 16135647784 in words is "sixteen billion, one hundred thirty-five million, six hundred forty-seven thousand, seven hundred eighty-four".