16135879712 has 12 divisors (see below), whose sum is σ = 31767513246. Its totient is φ = 8067939840.

The previous prime is 16135879693. The next prime is 16135879723. The reversal of 16135879712 is 21797853161.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13774308496 + 2361571216 = 117364^2 + 48596^2 .

It is a super-2 number, since 2×16135879712² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252123089 + ... + 252123152.

Almost surely, 2^16135879712 is an apocalyptic number.

It is an amenable number.

16135879712 is a deficient number, since it is larger than the sum of its proper divisors (15631633534).

16135879712 is an equidigital number, since it uses as much as digits as its factorization.

16135879712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504246251 (or 504246243 counting only the distinct ones).

The product of its digits is 635040, while the sum is 50.

The spelling of 16135879712 in words is "sixteen billion, one hundred thirty-five million, eight hundred seventy-nine thousand, seven hundred twelve".