40347661746731 has 4 divisors (see below), whose sum is σ = 41649199222464. Its totient is φ = 39046124271000.

The previous prime is 40347661746713. The next prime is 40347661746737. The reversal of 40347661746731 is 13764716674304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40347661746731 - 2¹⁸ = 40347661484587 is a prime.

It is a super-2 number, since 2×40347661746731² (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 (40347661746737) 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 3 ways as a sum of consecutive naturals, for example, 650768737820 + ... + 650768737881.

It is an arithmetic number, because the mean of its divisors is an integer number (10412299805616).

Almost surely, 2^{40347661746731} is an apocalyptic number.

40347661746731 is a deficient number, since it is larger than the sum of its proper divisors (1301537475733).

40347661746731 is a wasteful number, since it uses less digits than its factorization.

40347661746731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301537475732.

The product of its (nonzero) digits is 42674688, while the sum is 59.

The spelling of 40347661746731 in words is "forty trillion, three hundred forty-seven billion, six hundred sixty-one million, seven hundred forty-six thousand, seven hundred thirty-one".