40852538499661 has 16 divisors (see below), whose sum is σ = 48137047681536. Its totient is φ = 33937502294016.

The previous prime is 40852538499623. The next prime is 40852538499671. The reversal of 40852538499661 is 16699483525804.

It is a cyclic number.

It is not a de Polignac number, because 40852538499661 - 2¹⁵ = 40852538466893 is a prime.

It is a super-2 number, since 2×40852538499661² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40852538499671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306804661 + ... + 306937786.

It is an arithmetic number, because the mean of its divisors is an integer number (3008565480096).

Almost surely, 2^{40852538499661} is an apocalyptic number.

It is an amenable number.

40852538499661 is a deficient number, since it is larger than the sum of its proper divisors (7284509181875).

40852538499661 is a wasteful number, since it uses less digits than its factorization.

40852538499661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613742748.

The product of its (nonzero) digits is 447897600, while the sum is 70.

The spelling of 40852538499661 in words is "forty trillion, eight hundred fifty-two billion, five hundred thirty-eight million, four hundred ninety-nine thousand, six hundred sixty-one".