61042073024440 has 32 divisors (see below), whose sum is σ = 137350894790160. Its totient is φ = 24415721568000.

The previous prime is 61042073024411. The next prime is 61042073024441. The reversal of 61042073024440 is 4442037024016.

It is a happy number.

It is a super-2 number, since 2×61042073024440² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61042073024440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61042073024441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33720741 + ... + 35484820.

Almost surely, 2^{61042073024440} is an apocalyptic number.

It is an amenable number.

61042073024440 is an abundant number, since it is smaller than the sum of its proper divisors (76308821765720).

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

61042073024440 is a wasteful number, since it uses less digits than its factorization.

61042073024440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69227623 (or 69227619 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 37.

The spelling of 61042073024440 in words is "sixty-one trillion, forty-two billion, seventy-three million, twenty-four thousand, four hundred forty".