61012421016 has 32 divisors (see below), whose sum is σ = 156078288960. Its totient is φ = 19864508832.

The previous prime is 61012421009. The next prime is 61012421017.

It is a happy number.

61012421016 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012421017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29559250 + ... + 29561313.

It is an arithmetic number, because the mean of its divisors is an integer number (4877446530).

Almost surely, 2^61012421016 is an apocalyptic number.

It is an amenable number.

61012421016 is an abundant number, since it is smaller than the sum of its proper divisors (95065867944).

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

61012421016 is a wasteful number, since it uses less digits than its factorization.

61012421016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59120615 (or 59120611 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 61012421016 in words is "sixty-one billion, twelve million, four hundred twenty-one thousand, sixteen".