149818585978 has 8 divisors (see below), whose sum is σ = 224730792000. Its totient is φ = 74908321980.

The previous prime is 149818585967. The next prime is 149818586023. The reversal of 149818585978 is 879585818941.

149818585978 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 149818585978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274258 + ... + 612253.

It is an arithmetic number, because the mean of its divisors is an integer number (28091349000).

Almost surely, 2^149818585978 is an apocalyptic number.

149818585978 is a deficient number, since it is larger than the sum of its proper divisors (74912206022).

149818585978 is an equidigital number, since it uses as much as digits as its factorization.

149818585978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971012.

The product of its digits is 232243200, while the sum is 73.

The spelling of 149818585978 in words is "one hundred forty-nine billion, eight hundred eighteen million, five hundred eighty-five thousand, nine hundred seventy-eight".