61110555547 has 4 divisors (see below), whose sum is σ = 61113994480. Its totient is φ = 61107116616.

The previous prime is 61110555523. The next prime is 61110555563. The reversal of 61110555547 is 74555501116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61110555547 - 2⁷ = 61110555419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61110555577) 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, 1692672 + ... + 1728397.

It is an arithmetic number, because the mean of its divisors is an integer number (15278498620).

Almost surely, 2^61110555547 is an apocalyptic number.

61110555547 is a deficient number, since it is larger than the sum of its proper divisors (3438933).

61110555547 is a wasteful number, since it uses less digits than its factorization.

61110555547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438932.

The product of its (nonzero) digits is 105000, while the sum is 40.

The spelling of 61110555547 in words is "sixty-one billion, one hundred ten million, five hundred fifty-five thousand, five hundred forty-seven".