61110500001 has 16 divisors (see below), whose sum is σ = 83354641920.
Its totient is φ = 39813586560.
The previous prime is 61110499991. The next prime is 61110500021. The reversal of 61110500001 is 10000501116.
61110500001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 61110500001 - 25 = 61110499969 is a prime.
It is not an unprimeable number, because it can be changed into a prime (61110500021) 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, 1256145 + ... + 1303886.
It is an arithmetic number, because the mean of its divisors is an integer number (5209665120).
Almost surely, 261110500001 is an apocalyptic number.
It is an amenable number.
61110500001 is a deficient number, since it is larger than the sum of its proper divisors (22244141919).
61110500001 is a wasteful number, since it uses less digits than its factorization.
61110500001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2560216.
The product of its (nonzero) digits is 30, while the sum is 15.
The spelling of 61110500001 in words is "sixty-one billion, one hundred ten million, five hundred thousand, one".