61442177112 has 48 divisors (see below), whose sum is σ = 166520863080. Its totient is φ = 20466576000.

The previous prime is 61442177099. The next prime is 61442177117. The reversal of 61442177112 is 21177124416.

61442177112 is a `hidden beast` number, since 614 + 4 + 21 + 7 + 7 + 1 + 12 = 666.

61442177112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61442177112² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61442177117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189589 + ... + 398532.

Almost surely, 2^61442177112 is an apocalyptic number.

It is an amenable number.

61442177112 is an abundant number, since it is smaller than the sum of its proper divisors (105078685968).

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

61442177112 is a wasteful number, since it uses less digits than its factorization.

61442177112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589584 (or 589577 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The spelling of 61442177112 in words is "sixty-one billion, four hundred forty-two million, one hundred seventy-seven thousand, one hundred twelve".