40391861716 has 6 divisors (see below), whose sum is σ = 70685758010. Its totient is φ = 20195930856.

The previous prime is 40391861681. The next prime is 40391861737. The reversal of 40391861716 is 61716819304.

It can be written as a sum of positive squares in only one way, i.e., 31919395600 + 8472466116 = 178660^2 + 92046^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5048982711 + ... + 5048982718.

Almost surely, 2^40391861716 is an apocalyptic number.

It is an amenable number.

40391861716 is a deficient number, since it is larger than the sum of its proper divisors (30293896294).

40391861716 is a wasteful number, since it uses less digits than its factorization.

40391861716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097965433 (or 10097965431 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 40391861716 in words is "forty billion, three hundred ninety-one million, eight hundred sixty-one thousand, seven hundred sixteen".