39995226757 has 4 divisors (see below), whose sum is σ = 40102452940. Its totient is φ = 39888000576.

The previous prime is 39995226679. The next prime is 39995226767. The reversal of 39995226757 is 75762259993.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20483048161 + 19512178596 = 143119^2 + 139686^2 .

It is a cyclic number.

It is not a de Polignac number, because 39995226757 - 2⁷ = 39995226629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39995226767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53612532 + ... + 53613277.

It is an arithmetic number, because the mean of its divisors is an integer number (10025613235).

Almost surely, 2^39995226757 is an apocalyptic number.

It is an amenable number.

39995226757 is a deficient number, since it is larger than the sum of its proper divisors (107226183).

39995226757 is a wasteful number, since it uses less digits than its factorization.

39995226757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107226182.

The product of its digits is 64297800, while the sum is 64.

The spelling of 39995226757 in words is "thirty-nine billion, nine hundred ninety-five million, two hundred twenty-six thousand, seven hundred fifty-seven".