148721066779 has 4 divisors (see below), whose sum is σ = 148733547984. Its totient is φ = 148708585576.

The previous prime is 148721066761. The next prime is 148721066801. The reversal of 148721066779 is 977660127841.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148721066779 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148721066729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6222712 + ... + 6246565.

It is an arithmetic number, because the mean of its divisors is an integer number (37183386996).

Almost surely, 2^148721066779 is an apocalyptic number.

148721066779 is a deficient number, since it is larger than the sum of its proper divisors (12481205).

148721066779 is a wasteful number, since it uses less digits than its factorization.

148721066779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12481204.

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 148721066779 in words is "one hundred forty-eight billion, seven hundred twenty-one million, sixty-six thousand, seven hundred seventy-nine".