40014020521 has 8 divisors (see below), whose sum is σ = 42787271304. Its totient is φ = 37287379200.

The previous prime is 40014020467. The next prime is 40014020537. The reversal of 40014020521 is 12502041004.

40014020521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33639594921 + 6374425600 = 183411^2 + 79840^2 .

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 40014020521 - 2³³ = 31424085929 is a prime.

It is a super-2 number, since 2×40014020521² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40014020551) 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, 11650590 + ... + 11654023.

It is an arithmetic number, because the mean of its divisors is an integer number (5348408913).

Almost surely, 2^40014020521 is an apocalyptic number.

It is an amenable number.

40014020521 is a deficient number, since it is larger than the sum of its proper divisors (2773250783).

40014020521 is a wasteful number, since it uses less digits than its factorization.

40014020521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23304731.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 40014020521 its reverse (12502041004), we get a palindrome (52516061525).

The spelling of 40014020521 in words is "forty billion, fourteen million, twenty thousand, five hundred twenty-one".