16121159527 has 4 divisors (see below), whose sum is σ = 17586719496. Its totient is φ = 14655599560.

The previous prime is 16121159519. The next prime is 16121159543. The reversal of 16121159527 is 72595112161.

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

It is a cyclic number.

It is not a de Polignac number, because 16121159527 - 2³ = 16121159519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16121159527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121153527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732779968 + ... + 732779989.

It is an arithmetic number, because the mean of its divisors is an integer number (4396679874).

Almost surely, 2^16121159527 is an apocalyptic number.

16121159527 is a deficient number, since it is larger than the sum of its proper divisors (1465559969).

16121159527 is a wasteful number, since it uses less digits than its factorization.

16121159527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465559968.

The product of its digits is 37800, while the sum is 40.

The spelling of 16121159527 in words is "sixteen billion, one hundred twenty-one million, one hundred fifty-nine thousand, five hundred twenty-seven".