40245166299978 has 40 divisors (see below), whose sum is σ = 90184803250080. Its totient is φ = 13414189722120.

The previous prime is 40245166299907. The next prime is 40245166299979. The reversal of 40245166299978 is 87999266154204.

40245166299978 is a `hidden beast` number, since 4 + 0 + 2 + 451 + 66 + 29 + 9 + 97 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (40245166299979) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5495308 + ... + 10520871.

It is an arithmetic number, because the mean of its divisors is an integer number (2254620081252).

Almost surely, 2^{40245166299978} is an apocalyptic number.

40245166299978 is an abundant number, since it is smaller than the sum of its proper divisors (49939636950102).

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

40245166299978 is a wasteful number, since it uses less digits than its factorization.

40245166299978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16031704 (or 16031695 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 40245166299978 in words is "forty trillion, two hundred forty-five billion, one hundred sixty-six million, two hundred ninety-nine thousand, nine hundred seventy-eight".