148778864649 has 12 divisors (see below), whose sum is σ = 214906528512. Its totient is φ = 99184191000.

The previous prime is 148778864599. The next prime is 148778864669. The reversal of 148778864649 is 946468877841.

148778864649 is a `hidden beast` number, since 1 + 4 + 87 + 7 + 8 + 86 + 464 + 9 = 666.

It is not a de Polignac number, because 148778864649 - 2⁹ = 148778864137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148778864669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617824 + ... + 824174.

It is an arithmetic number, because the mean of its divisors is an integer number (17908877376).

Almost surely, 2^148778864649 is an apocalyptic number.

It is an amenable number.

148778864649 is a deficient number, since it is larger than the sum of its proper divisors (66127663863).

148778864649 is a wasteful number, since it uses less digits than its factorization.

148778864649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286468 (or 286465 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 148778864649 in words is "one hundred forty-eight billion, seven hundred seventy-eight million, eight hundred sixty-four thousand, six hundred forty-nine".