61415543206616 has 16 divisors (see below), whose sum is σ = 115166648172600. Its totient is φ = 30704437027264.

The previous prime is 61415543206613. The next prime is 61415543206627. The reversal of 61415543206616 is 61660234551416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61415543206613) 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, 416743730 + ... + 416891073.

Almost surely, 2^{61415543206616} is an apocalyptic number.

It is an amenable number.

61415543206616 is a deficient number, since it is larger than the sum of its proper divisors (53751104965984).

61415543206616 is a wasteful number, since it uses less digits than its factorization.

61415543206616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833644018 (or 833644014 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 61415543206616 in words is "sixty-one trillion, four hundred fifteen billion, five hundred forty-three million, two hundred six thousand, six hundred sixteen".