16021511364 has 24 divisors (see below), whose sum is σ = 37400557600. Its totient is φ = 5338070784.

The previous prime is 16021511353. The next prime is 16021511369. The reversal of 16021511364 is 46311512061.

It is a happy number.

It is a super-2 number, since 2×16021511364² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16021511369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276589 + ... + 329460.

Almost surely, 2^16021511364 is an apocalyptic number.

It is an amenable number.

16021511364 is an abundant number, since it is smaller than the sum of its proper divisors (21379046236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16021511364 is a wasteful number, since it uses less digits than its factorization.

16021511364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608259 (or 608257 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 16021511364 in words is "sixteen billion, twenty-one million, five hundred eleven thousand, three hundred sixty-four".