61011110505 has 32 divisors (see below), whose sum is σ = 100390118400. Its totient is φ = 31622754240.

The previous prime is 61011110473. The next prime is 61011110519. The reversal of 61011110505 is 50501111016.

It is a happy number.

61011110505 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 61011110505 - 2⁵ = 61011110473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109311 + ... + 366020.

It is an arithmetic number, because the mean of its divisors is an integer number (3137191200).

Almost surely, 2^61011110505 is an apocalyptic number.

It is an amenable number.

61011110505 is a deficient number, since it is larger than the sum of its proper divisors (39379007895).

61011110505 is a wasteful number, since it uses less digits than its factorization.

61011110505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475581.

The product of its (nonzero) digits is 150, while the sum is 21.

The spelling of 61011110505 in words is "sixty-one billion, eleven million, one hundred ten thousand, five hundred five".