16706442557 has 8 divisors (see below), whose sum is σ = 19094063232. Its totient is φ = 14319068400.

The previous prime is 16706442523. The next prime is 16706442581. The reversal of 16706442557 is 75524460761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16706442557 - 2¹² = 16706438461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16706742557) 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, 118832 + ... + 218022.

It is an arithmetic number, because the mean of its divisors is an integer number (2386757904).

Almost surely, 2^16706442557 is an apocalyptic number.

It is an amenable number.

16706442557 is a deficient number, since it is larger than the sum of its proper divisors (2387620675).

16706442557 is an equidigital number, since it uses as much as digits as its factorization.

16706442557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123259.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 16706442557 in words is "sixteen billion, seven hundred six million, four hundred forty-two thousand, five hundred fifty-seven".