16116021534 has 16 divisors (see below), whose sum is σ = 32840195472. Its totient is φ = 5270648448.

The previous prime is 16116021529. The next prime is 16116021563. The reversal of 16116021534 is 43512061161.

It is a happy number.

It is a congruent number.

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, 25339339 + ... + 25339974.

It is an arithmetic number, because the mean of its divisors is an integer number (2052512217).

Almost surely, 2^16116021534 is an apocalyptic number.

16116021534 is an abundant number, since it is smaller than the sum of its proper divisors (16724173938).

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

16116021534 is a wasteful number, since it uses less digits than its factorization.

16116021534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50679371.

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

Adding to 16116021534 its reverse (43512061161), we get a palindrome (59628082695).

The spelling of 16116021534 in words is "sixteen billion, one hundred sixteen million, twenty-one thousand, five hundred thirty-four".