7647740140631 has 8 divisors (see below), whose sum is σ = 7980283137120. Its totient is φ = 7315199857152.

The previous prime is 7647740140619. The next prime is 7647740140661. The reversal of 7647740140631 is 1360410477467.

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 7647740140631 - 2¹⁰ = 7647740139607 is a prime.

It is a super-2 number, since 2×7647740140631² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7647740140631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7647740140661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6869231 + ... + 7904543.

It is an arithmetic number, because the mean of its divisors is an integer number (997535392140).

Almost surely, 2^{7647740140631} is an apocalyptic number.

7647740140631 is a deficient number, since it is larger than the sum of its proper divisors (332542996489).

7647740140631 is a wasteful number, since it uses less digits than its factorization.

7647740140631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356505.

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 7647740140631 in words is "seven trillion, six hundred forty-seven billion, seven hundred forty million, one hundred forty thousand, six hundred thirty-one".