146238672978 has 48 divisors (see below), whose sum is σ = 336153093120. Its totient is φ = 45816992928.

The previous prime is 146238672961. The next prime is 146238673001. The reversal of 146238672978 is 879276832641.

146238672978 is a `hidden beast` number, since 1 + 462 + 3 + 86 + 7 + 2 + 97 + 8 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1640025 + ... + 1726892.

It is an arithmetic number, because the mean of its divisors is an integer number (7003189440).

Almost surely, 2^146238672978 is an apocalyptic number.

146238672978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

146238672978 is an abundant number, since it is smaller than the sum of its proper divisors (189914420142).

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

146238672978 is a wasteful number, since it uses less digits than its factorization.

146238672978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367071 (or 3367068 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 146238672978 in words is "one hundred forty-six billion, two hundred thirty-eight million, six hundred seventy-two thousand, nine hundred seventy-eight".