20146066087 has 16 divisors (see below), whose sum is σ = 24500966400. Its totient is φ = 16170599808.

The previous prime is 20146066081. The next prime is 20146066117. The reversal of 20146066087 is 78066064102.

It is a cyclic number.

It is not a de Polignac number, because 20146066087 - 2³ = 20146066079 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 (20146066081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401683 + ... + 449044.

It is an arithmetic number, because the mean of its divisors is an integer number (1531310400).

Almost surely, 2^20146066087 is an apocalyptic number.

20146066087 is a deficient number, since it is larger than the sum of its proper divisors (4354900313).

20146066087 is a wasteful number, since it uses less digits than its factorization.

20146066087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850950.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20146066087 in words is "twenty billion, one hundred forty-six million, sixty-six thousand, eighty-seven".