40221213542523 has 40 divisors (see below), whose sum is σ = 64709854748000. Its totient is φ = 24749793637632.

The previous prime is 40221213542431. The next prime is 40221213542581. The reversal of 40221213542523 is 32524531212204.

40221213542523 is a `hidden beast` number, since 4 + 0 + 2 + 2 + 121 + 3 + 5 + 4 + 2 + 523 = 666.

It is not a de Polignac number, because 40221213542523 - 2⁹ = 40221213542011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40221213942523) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13893018 + ... + 16536576.

It is an arithmetic number, because the mean of its divisors is an integer number (1617746368700).

Almost surely, 2^{40221213542523} is an apocalyptic number.

40221213542523 is a deficient number, since it is larger than the sum of its proper divisors (24488641205477).

40221213542523 is a wasteful number, since it uses less digits than its factorization.

40221213542523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658033 (or 2658024 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 40221213542523 its reverse (32524531212204), we get a palindrome (72745744754727).

The spelling of 40221213542523 in words is "forty trillion, two hundred twenty-one billion, two hundred thirteen million, five hundred forty-two thousand, five hundred twenty-three".