40381400280321 has 12 divisors (see below), whose sum is σ = 61398620309520. Its totient is φ = 25504042282200.

The previous prime is 40381400280317. The next prime is 40381400280329. The reversal of 40381400280321 is 12308200418304.

It is a happy number.

40381400280321 is a `hidden beast` number, since 40 + 3 + 8 + 14 + 0 + 0 + 280 + 321 = 666.

It is not a de Polignac number, because 40381400280321 - 2² = 40381400280317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40381400280329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118074269655 + ... + 118074269996.

It is an arithmetic number, because the mean of its divisors is an integer number (5116551692460).

Almost surely, 2^{40381400280321} is an apocalyptic number.

It is an amenable number.

40381400280321 is a deficient number, since it is larger than the sum of its proper divisors (21017220029199).

40381400280321 is a wasteful number, since it uses less digits than its factorization.

40381400280321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236148539676 (or 236148539673 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

Adding to 40381400280321 its reverse (12308200418304), we get a palindrome (52689600698625).

The spelling of 40381400280321 in words is "forty trillion, three hundred eighty-one billion, four hundred million, two hundred eighty thousand, three hundred twenty-one".