61011111090 has 32 divisors (see below), whose sum is σ = 154133334720. Its totient is φ = 15413333184.

The previous prime is 61011111053. The next prime is 61011111101. The reversal of 61011111090 is 9011111016.

61011111090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53517949 + ... + 53519088.

It is an arithmetic number, because the mean of its divisors is an integer number (4816666710).

Almost surely, 2^61011111090 is an apocalyptic number.

61011111090 is an abundant number, since it is smaller than the sum of its proper divisors (93122223630).

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

61011111090 is a wasteful number, since it uses less digits than its factorization.

61011111090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107037066.

The product of its (nonzero) digits is 54, while the sum is 21.

The spelling of 61011111090 in words is "sixty-one billion, eleven million, one hundred eleven thousand, ninety".