61005560100 has 72 divisors (see below), whose sum is σ = 178329190368. Its totient is φ = 16100428800.

The previous prime is 61005560081. The next prime is 61005560101. The reversal of 61005560100 is 106550016.

61005560100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61005560100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61005560101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1019106 + ... + 1077305.

Almost surely, 2^61005560100 is an apocalyptic number.

61005560100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61005560100 is an abundant number, since it is smaller than the sum of its proper divisors (117323630268).

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

61005560100 is a wasteful number, since it uses less digits than its factorization.

61005560100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096525 (or 2096518 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 61005560100 in words is "sixty-one billion, five million, five hundred sixty thousand, one hundred".