61545245636 has 12 divisors (see below), whose sum is σ = 123090491328. Its totient is φ = 26376533832.

The previous prime is 61545245627. The next prime is 61545245651. The reversal of 61545245636 is 63654254516.

61545245636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

61545245636 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1099022216 + ... + 1099022271.

It is an arithmetic number, because the mean of its divisors is an integer number (10257540944).

Almost surely, 2^61545245636 is an apocalyptic number.

It is an amenable number.

61545245636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61545245636 is a wasteful number, since it uses less digits than its factorization.

61545245636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198044498 (or 2198044496 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 47.

The spelling of 61545245636 in words is "sixty-one billion, five hundred forty-five million, two hundred forty-five thousand, six hundred thirty-six".