40731132261 has 16 divisors (see below), whose sum is σ = 54688397760. Its totient is φ = 26964264960.

The previous prime is 40731132259. The next prime is 40731132313. The reversal of 40731132261 is 16223113704.

It is a happy number.

It is not a de Polignac number, because 40731132261 - 2¹ = 40731132259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40731132961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542245 + ... + 612773.

It is an arithmetic number, because the mean of its divisors is an integer number (3418024860).

Almost surely, 2^40731132261 is an apocalyptic number.

It is an amenable number.

40731132261 is a deficient number, since it is larger than the sum of its proper divisors (13957265499).

40731132261 is a wasteful number, since it uses less digits than its factorization.

40731132261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71876.

The product of its (nonzero) digits is 6048, while the sum is 30.

Adding to 40731132261 its reverse (16223113704), we get a palindrome (56954245965).

The spelling of 40731132261 in words is "forty billion, seven hundred thirty-one million, one hundred thirty-two thousand, two hundred sixty-one".