1011105061061 has 4 divisors (see below), whose sum is σ = 1011141660672. Its totient is φ = 1011068461452.

The previous prime is 1011105061019. The next prime is 1011105061097. The reversal of 1011105061061 is 1601605011101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011105061061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011105069061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18258335 + ... + 18313628.

It is an arithmetic number, because the mean of its divisors is an integer number (252785415168).

Almost surely, 2^{1011105061061} is an apocalyptic number.

It is an amenable number.

1011105061061 is a deficient number, since it is larger than the sum of its proper divisors (36599611).

1011105061061 is an equidigital number, since it uses as much as digits as its factorization.

1011105061061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36599610.

The product of its (nonzero) digits is 180, while the sum is 23.

The spelling of 1011105061061 in words is "one trillion, eleven billion, one hundred five million, sixty-one thousand, sixty-one".