148322156778 has 96 divisors (see below), whose sum is σ = 339241803264. Its totient is φ = 48558744432.

The previous prime is 148322156777. The next prime is 148322156783. The reversal of 148322156778 is 877651223841.

148322156778 is a `hidden beast` number, since 1 + 4 + 8 + 3 + 2 + 2 + 1 + 567 + 78 = 666.

It is a super-2 number, since 2×148322156778² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (148322156777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11292451 + ... + 11305577.

It is an arithmetic number, because the mean of its divisors is an integer number (3533768784).

Almost surely, 2^148322156778 is an apocalyptic number.

148322156778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 148322156778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169620901632).

148322156778 is an abundant number, since it is smaller than the sum of its proper divisors (190919646486).

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

148322156778 is a wasteful number, since it uses less digits than its factorization.

148322156778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13558 (or 13546 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 148322156778 in words is "one hundred forty-eight billion, three hundred twenty-two million, one hundred fifty-six thousand, seven hundred seventy-eight".