61547598861 has 16 divisors (see below), whose sum is σ = 93797033088. Its totient is φ = 35166225600.

The previous prime is 61547598851. The next prime is 61547598899. The reversal of 61547598861 is 16889574516.

It is not a de Polignac number, because 61547598861 - 2⁷ = 61547598733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61547598795 and 61547598804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61547598851) 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, 43791 + ... + 353571.

It is an arithmetic number, because the mean of its divisors is an integer number (5862314568).

Almost surely, 2^61547598861 is an apocalyptic number.

It is an amenable number.

61547598861 is a deficient number, since it is larger than the sum of its proper divisors (32249434227).

61547598861 is a wasteful number, since it uses less digits than its factorization.

61547598861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319252.

The product of its digits is 14515200, while the sum is 60.

The spelling of 61547598861 in words is "sixty-one billion, five hundred forty-seven million, five hundred ninety-eight thousand, eight hundred sixty-one".