61311109794 has 32 divisors (see below), whose sum is σ = 133947924480. Its totient is φ = 18554370000.

The previous prime is 61311109793. The next prime is 61311109799. The reversal of 61311109794 is 49790111316.

It is not an unprimeable number, because it can be changed into a prime (61311109793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568914 + ... + 668045.

It is an arithmetic number, because the mean of its divisors is an integer number (4185872640).

Almost surely, 2^61311109794 is an apocalyptic number.

61311109794 is an abundant number, since it is smaller than the sum of its proper divisors (72636814686).

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

61311109794 is a wasteful number, since it uses less digits than its factorization.

61311109794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237726.

The product of its (nonzero) digits is 40824, while the sum is 42.

The spelling of 61311109794 in words is "sixty-one billion, three hundred eleven million, one hundred nine thousand, seven hundred ninety-four".