16858153997 has 8 divisors (see below), whose sum is σ = 17822920800. Its totient is φ = 15901136784.

The previous prime is 16858153993. The next prime is 16858154009. The reversal of 16858153997 is 79935185861.

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

It is not a de Polignac number, because 16858153997 - 2² = 16858153993 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 (16858153993) 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, 1932923 + ... + 1941624.

It is an arithmetic number, because the mean of its divisors is an integer number (2227865100).

Almost surely, 2^16858153997 is an apocalyptic number.

It is an amenable number.

16858153997 is a deficient number, since it is larger than the sum of its proper divisors (964766803).

16858153997 is a wasteful number, since it uses less digits than its factorization.

16858153997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874795.

The product of its digits is 16329600, while the sum is 62.

The spelling of 16858153997 in words is "sixteen billion, eight hundred fifty-eight million, one hundred fifty-three thousand, nine hundred ninety-seven".