146386860821 has 32 divisors (see below), whose sum is σ = 158547352320. Its totient is φ = 134662291456.

The previous prime is 146386860817. The next prime is 146386860833. The reversal of 146386860821 is 128068683641.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 146386860821 - 2² = 146386860817 is a prime.

It is a super-2 number, since 2×146386860821² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146386860121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120284405 + ... + 120285621.

It is an arithmetic number, because the mean of its divisors is an integer number (4954604760).

Almost surely, 2^146386860821 is an apocalyptic number.

It is an amenable number.

146386860821 is a deficient number, since it is larger than the sum of its proper divisors (12160491499).

146386860821 is a wasteful number, since it uses less digits than its factorization.

146386860821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 146386860821 in words is "one hundred forty-six billion, three hundred eighty-six million, eight hundred sixty thousand, eight hundred twenty-one".