40768148178 has 64 divisors (see below), whose sum is σ = 92784954240. Its totient is φ = 13264430400.

The previous prime is 40768148173. The next prime is 40768148189. The reversal of 40768148178 is 87184186704.

40768148178 is a `hidden beast` number, since 407 + 68 + 1 + 4 + 8 + 178 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (40768148173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384276 + ... + 478752.

It is an arithmetic number, because the mean of its divisors is an integer number (1449764910).

Almost surely, 2^40768148178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40768148178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46392477120).

40768148178 is an abundant number, since it is smaller than the sum of its proper divisors (52016806062).

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

40768148178 is a wasteful number, since it uses less digits than its factorization.

40768148178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94680 (or 94674 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The spelling of 40768148178 in words is "forty billion, seven hundred sixty-eight million, one hundred forty-eight thousand, one hundred seventy-eight".