146800021554 has 12 divisors (see below), whose sum is σ = 318066713406. Its totient is φ = 48933340512.

The previous prime is 146800021519. The next prime is 146800021657. The reversal of 146800021554 is 455120008641.

It is a happy number.

146800021554 is a `hidden beast` number, since 1 + 4 + 6 + 80 + 0 + 0 + 21 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 128756815929 + 18043205625 = 358827^2 + 134325^2 .

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4077778359 + ... + 4077778394.

Almost surely, 2^146800021554 is an apocalyptic number.

146800021554 is an abundant number, since it is smaller than the sum of its proper divisors (171266691852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

146800021554 is a wasteful number, since it uses less digits than its factorization.

146800021554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155556761 (or 8155556758 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 146800021554 in words is "one hundred forty-six billion, eight hundred million, twenty-one thousand, five hundred fifty-four".