146487817778 has 16 divisors (see below), whose sum is σ = 219960513240. Its totient is φ = 73167687936.

The previous prime is 146487817703. The next prime is 146487817921. The reversal of 146487817778 is 877718784641.

146487817778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 97227346969 + 49260470809 = 311813^2 + 221947^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9040508 + ... + 9056696.

Almost surely, 2^146487817778 is an apocalyptic number.

146487817778 is a deficient number, since it is larger than the sum of its proper divisors (73472695462).

146487817778 is a wasteful number, since it uses less digits than its factorization.

146487817778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20621.

The product of its digits is 118013952, while the sum is 68.

The spelling of 146487817778 in words is "one hundred forty-six billion, four hundred eighty-seven million, eight hundred seventeen thousand, seven hundred seventy-eight".