16021508874435 has 24 divisors (see below), whose sum is σ = 27771826537104. Its totient is φ = 8544432070080.

The previous prime is 16021508874403. The next prime is 16021508874461. The reversal of 16021508874435 is 53447880512061.

It is a happy number.

16021508874435 is a `hidden beast` number, since 1 + 6 + 0 + 21 + 508 + 8 + 74 + 43 + 5 = 666.

It is not a de Polignac number, because 16021508874435 - 2⁵ = 16021508874403 is a prime.

It is a super-2 number, since 2×16021508874435² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6718996 + ... + 8785665.

It is an arithmetic number, because the mean of its divisors is an integer number (1157159439046).

Almost surely, 2^{16021508874435} is an apocalyptic number.

16021508874435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16021508874435 is a deficient number, since it is larger than the sum of its proper divisors (11750317662669).

16021508874435 is a wasteful number, since it uses less digits than its factorization.

16021508874435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15527635 (or 15527632 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 16021508874435 in words is "sixteen trillion, twenty-one billion, five hundred eight million, eight hundred seventy-four thousand, four hundred thirty-five".