61011890766 has 32 divisors (see below), whose sum is σ = 135630892800. Its totient is φ = 20329959960.

The previous prime is 61011890761. The next prime is 61011890789. The reversal of 61011890766 is 66709811016.

61011890766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61011890761) 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, 51696 + ... + 353123.

It is an arithmetic number, because the mean of its divisors is an integer number (4238465400).

Almost surely, 2^61011890766 is an apocalyptic number.

61011890766 is an abundant number, since it is smaller than the sum of its proper divisors (74619002034).

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

61011890766 is a wasteful number, since it uses less digits than its factorization.

61011890766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407621 (or 407615 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 61011890766 in words is "sixty-one billion, eleven million, eight hundred ninety thousand, seven hundred sixty-six".