16890355534 has 16 divisors (see below), whose sum is σ = 27287513568. Its totient is φ = 7794664992.

The previous prime is 16890355523. The next prime is 16890355561. The reversal of 16890355534 is 43555309861.

It is a happy number.

It is a super-2 number, since 2×16890355534² (a number of 21 digits) contains 22 as substring.

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, 234724 + ... + 298120.

It is an arithmetic number, because the mean of its divisors is an integer number (1705469598).

Almost surely, 2^16890355534 is an apocalyptic number.

16890355534 is a deficient number, since it is larger than the sum of its proper divisors (10397158034).

16890355534 is a wasteful number, since it uses less digits than its factorization.

16890355534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73659.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 16890355534 in words is "sixteen billion, eight hundred ninety million, three hundred fifty-five thousand, five hundred thirty-four".