146778860028 has 48 divisors (see below), whose sum is σ = 349374421760. Its totient is φ = 47951737344.

The previous prime is 146778860027. The next prime is 146778860069. The reversal of 146778860028 is 820068877641.

It is a happy number.

It is a super-2 number, since 2×146778860028² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 146778860028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146778860027) 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, 492238 + ... + 732021.

Almost surely, 2^146778860028 is an apocalyptic number.

It is an amenable number.

146778860028 is an abundant number, since it is smaller than the sum of its proper divisors (202595561732).

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

146778860028 is a wasteful number, since it uses less digits than its factorization.

146778860028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224466 (or 1224464 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 146778860028 in words is "one hundred forty-six billion, seven hundred seventy-eight million, eight hundred sixty thousand, twenty-eight".