146222876881 has 3 divisors (see below), whose sum is σ = 146223259273. Its totient is φ = 146222494490.

The previous prime is 146222876857. The next prime is 146222876887. The reversal of 146222876881 is 188678222641.

The square root of 146222876881 is 382391.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188678222641 = 119293 ⋅1581637.

It is not a de Polignac number, because 146222876881 - 2⁷ = 146222876753 is a prime.

It is a super-2 number, since 2×146222876881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146222876887) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 191196 + ... + 573586.

Almost surely, 2^146222876881 is an apocalyptic number.

146222876881 is the 382391-st square number.

146222876881 is the 191196-th centered octagonal number.

It is an amenable number.

146222876881 is a deficient number, since it is larger than the sum of its proper divisors (382392).

146222876881 is an frugal number, since it uses more digits than its factorization.

146222876881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764782 (or 382391 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 55.

The spelling of 146222876881 in words is "one hundred forty-six billion, two hundred twenty-two million, eight hundred seventy-six thousand, eight hundred eighty-one".