61100605500543 has 128 divisors (see below), whose sum is σ = 109579643043840. Its totient is φ = 32892187363200.

The previous prime is 61100605500499. The next prime is 61100605500593. The reversal of 61100605500543 is 34500550600116.

61100605500543 is a `hidden beast` number, since 6 + 1 + 1 + 0 + 0 + 60 + 5 + 50 + 0 + 543 = 666.

It is not a de Polignac number, because 61100605500543 - 2⁹ = 61100605500031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61100605500498 and 61100605500507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61100605500593) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1951643896 + ... + 1951675202.

It is an arithmetic number, because the mean of its divisors is an integer number (856090961280).

Almost surely, 2^{61100605500543} is an apocalyptic number.

61100605500543 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61100605500543 is a deficient number, since it is larger than the sum of its proper divisors (48479037543297).

61100605500543 is a wasteful number, since it uses less digits than its factorization.

61100605500543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38114 (or 38108 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 61100605500543 in words is "sixty-one trillion, one hundred billion, six hundred five million, five hundred thousand, five hundred forty-three".