148561774254978 has 64 divisors (see below), whose sum is σ = 366159957166080. Its totient is φ = 39231423964800.

The previous prime is 148561774254931. The next prime is 148561774254983. The reversal of 148561774254978 is 879452477165841.

It is a happy number.

148561774254978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2270304318 + ... + 2270369753.

It is an arithmetic number, because the mean of its divisors is an integer number (5721249330720).

Almost surely, 2^{148561774254978} is an apocalyptic number.

148561774254978 is an abundant number, since it is smaller than the sum of its proper divisors (217598182911102).

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

148561774254978 is a wasteful number, since it uses less digits than its factorization.

148561774254978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540674143.

The product of its digits is 3793305600, while the sum is 78.

The spelling of 148561774254978 in words is "one hundred forty-eight trillion, five hundred sixty-one billion, seven hundred seventy-four million, two hundred fifty-four thousand, nine hundred seventy-eight".