61545682536 has 32 divisors (see below), whose sum is σ = 165699915360. Its totient is φ = 18937132992.

The previous prime is 61545682483. The next prime is 61545682553. The reversal of 61545682536 is 63528654516.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98630590 + ... + 98631213.

It is an arithmetic number, because the mean of its divisors is an integer number (5178122355).

Almost surely, 2^61545682536 is an apocalyptic number.

It is an amenable number.

61545682536 is an abundant number, since it is smaller than the sum of its proper divisors (104154232824).

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

61545682536 is a wasteful number, since it uses less digits than its factorization.

61545682536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197261825 (or 197261821 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 51.

The spelling of 61545682536 in words is "sixty-one billion, five hundred forty-five million, six hundred eighty-two thousand, five hundred thirty-six".