40521630181431 has 48 divisors (see below), whose sum is σ = 64623207132000. Its totient is φ = 22509900870912.

The previous prime is 40521630181397. The next prime is 40521630181477. The reversal of 40521630181431 is 13418103612504.

It is not a de Polignac number, because 40521630181431 - 2⁷ = 40521630181303 is a prime.

It is a super-2 number, since 2×40521630181431² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40521630181431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40521630181231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23008956 + ... + 24707393.

It is an arithmetic number, because the mean of its divisors is an integer number (1346316815250).

Almost surely, 2^{40521630181431} is an apocalyptic number.

40521630181431 is a deficient number, since it is larger than the sum of its proper divisors (24101576950569).

40521630181431 is a wasteful number, since it uses less digits than its factorization.

40521630181431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47716528 (or 47716521 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 40521630181431 its reverse (13418103612504), we get a palindrome (53939733793935).

The spelling of 40521630181431 in words is "forty trillion, five hundred twenty-one billion, six hundred thirty million, one hundred eighty-one thousand, four hundred thirty-one".