61007614440 has 64 divisors (see below), whose sum is σ = 183209385600. Its totient is φ = 16252115712.

The previous prime is 61007614351. The next prime is 61007614441. The reversal of 61007614440 is 4441670016.

It is a super-3 number, since 3×61007614440³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61007614441) 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, 140635 + ... + 376554.

It is an arithmetic number, because the mean of its divisors is an integer number (2862646650).

Almost surely, 2^61007614440 is an apocalyptic number.

61007614440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61007614440 is an abundant number, since it is smaller than the sum of its proper divisors (122201771160).

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

61007614440 is a wasteful number, since it uses less digits than its factorization.

61007614440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518186 (or 518182 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 61007614440 in words is "sixty-one billion, seven million, six hundred fourteen thousand, four hundred forty".