3642140332978 has 32 divisors (see below), whose sum is σ = 6447185722368. Its totient is φ = 1510071076800.

The previous prime is 3642140332969. The next prime is 3642140333057. The reversal of 3642140332978 is 8792330412463.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42325 + ... + 2699272.

It is an arithmetic number, because the mean of its divisors is an integer number (201474553824).

Almost surely, 2^{3642140332978} is an apocalyptic number.

3642140332978 is a deficient number, since it is larger than the sum of its proper divisors (2805045389390).

3642140332978 is a wasteful number, since it uses less digits than its factorization.

3642140332978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744698.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 3642140332978 in words is "three trillion, six hundred forty-two billion, one hundred forty million, three hundred thirty-two thousand, nine hundred seventy-eight".