61011111008 has 24 divisors (see below), whose sum is σ = 120135805272. Its totient is φ = 30500430336.

The previous prime is 61011111001. The next prime is 61011111053. The reversal of 61011111008 is 80011111016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61011111001) 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, 37016 + ... + 351272.

It is an arithmetic number, because the mean of its divisors is an integer number (5005658553).

Almost surely, 2^61011111008 is an apocalyptic number.

It is an amenable number.

61011111008 is a deficient number, since it is larger than the sum of its proper divisors (59124694264).

61011111008 is a wasteful number, since it uses less digits than its factorization.

61011111008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320334 (or 320326 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 20.

The spelling of 61011111008 in words is "sixty-one billion, eleven million, one hundred eleven thousand, eight".