40390027505281 has 8 divisors (see below), whose sum is σ = 40948031466144. Its totient is φ = 39835806622560.

The previous prime is 40390027505227. The next prime is 40390027505323. The reversal of 40390027505281 is 18250572009304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40390027505281 - 2⁹ = 40390027504769 is a prime.

It is a super-2 number, since 2×40390027505281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40390027505381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945748036 + ... + 945790741.

It is an arithmetic number, because the mean of its divisors is an integer number (5118503933268).

Almost surely, 2^{40390027505281} is an apocalyptic number.

It is an amenable number.

40390027505281 is a deficient number, since it is larger than the sum of its proper divisors (558003960863).

40390027505281 is a wasteful number, since it uses less digits than its factorization.

40390027505281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891539071.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 40390027505281 in words is "forty trillion, three hundred ninety billion, twenty-seven million, five hundred five thousand, two hundred eighty-one".