40737755661 has 8 divisors (see below), whose sum is σ = 54400190880. Its totient is φ = 27116912112.

The previous prime is 40737755659. The next prime is 40737755683. The reversal of 40737755661 is 16655773704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40737755661 - 2¹ = 40737755659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40737755561) 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, 10395631 + ... + 10399548.

It is an arithmetic number, because the mean of its divisors is an integer number (6800023860).

Almost surely, 2^40737755661 is an apocalyptic number.

It is an amenable number.

40737755661 is a deficient number, since it is larger than the sum of its proper divisors (13662435219).

40737755661 is a wasteful number, since it uses less digits than its factorization.

40737755661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20795835.

The product of its (nonzero) digits is 3704400, while the sum is 51.

The spelling of 40737755661 in words is "forty billion, seven hundred thirty-seven million, seven hundred fifty-five thousand, six hundred sixty-one".