40117427661 has 8 divisors (see below), whose sum is σ = 53501068800. Its totient is φ = 26739369152.

The previous prime is 40117427657. The next prime is 40117427663. The reversal of 40117427661 is 16672471104.

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 40117427661 - 2² = 40117427657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40117427663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378860 + ... + 1407653.

It is an arithmetic number, because the mean of its divisors is an integer number (6687633600).

Almost surely, 2^40117427661 is an apocalyptic number.

It is an amenable number.

40117427661 is a deficient number, since it is larger than the sum of its proper divisors (13383641139).

40117427661 is a wasteful number, since it uses less digits than its factorization.

40117427661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791315.

The product of its (nonzero) digits is 56448, while the sum is 39.

Adding to 40117427661 its reverse (16672471104), we get a palindrome (56789898765).

The spelling of 40117427661 in words is "forty billion, one hundred seventeen million, four hundred twenty-seven thousand, six hundred sixty-one".