16666575740 has 24 divisors (see below), whose sum is σ = 35003595312. Its totient is φ = 6665909120.

The previous prime is 16666575697. The next prime is 16666575791. The reversal of 16666575740 is 4757566661.

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, 169295 + ... + 248985.

It is an arithmetic number, because the mean of its divisors is an integer number (1458483138).

Almost surely, 2^16666575740 is an apocalyptic number.

16666575740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16666575740 is an abundant number, since it is smaller than the sum of its proper divisors (18337019572).

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

16666575740 is a wasteful number, since it uses less digits than its factorization.

16666575740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90157 (or 90155 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 53.

The spelling of 16666575740 in words is "sixteen billion, six hundred sixty-six million, five hundred seventy-five thousand, seven hundred forty".