148783540978 has 4 divisors (see below), whose sum is σ = 223175311470. Its totient is φ = 74391770488.

The previous prime is 148783540957. The next prime is 148783540987. The reversal of 148783540978 is 879045387841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 122684169169 + 26099371809 = 350263^2 + 161553^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37195885243 + ... + 37195885246.

Almost surely, 2^148783540978 is an apocalyptic number.

148783540978 is a deficient number, since it is larger than the sum of its proper divisors (74391770492).

148783540978 is an equidigital number, since it uses as much as digits as its factorization.

148783540978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74391770491.

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 148783540978 in words is "one hundred forty-eight billion, seven hundred eighty-three million, five hundred forty thousand, nine hundred seventy-eight".