61111111032 has 24 divisors (see below), whose sum is σ = 165509259240. Its totient is φ = 20370370320.

The previous prime is 61111111031. The next prime is 61111111049. The reversal of 61111111032 is 23011111116.

61111111032 is a `hidden beast` number, since 611 + 1 + 1 + 11 + 10 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 61111110996 and 61111111014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111111031) 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 5 ways as a sum of consecutive naturals, for example, 424382644 + ... + 424382787.

It is an arithmetic number, because the mean of its divisors is an integer number (6896219135).

Almost surely, 2^61111111032 is an apocalyptic number.

It is an amenable number.

61111111032 is an abundant number, since it is smaller than the sum of its proper divisors (104398148208).

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

61111111032 is a wasteful number, since it uses less digits than its factorization.

61111111032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848765443 (or 848765436 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 61111111032 its reverse (23011111116), we get a palindrome (84122222148).

The spelling of 61111111032 in words is "sixty-one billion, one hundred eleven million, one hundred eleven thousand, thirty-two".