61012421008 has 40 divisors (see below), whose sum is σ = 147380656320. Its totient is φ = 23771072640.

The previous prime is 61012420993. The next prime is 61012421009. The reversal of 61012421008 is 80012421016.

61012421008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61012421009) 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, 24760303 + ... + 24762766.

It is an arithmetic number, because the mean of its divisors is an integer number (3684516408).

Almost surely, 2^61012421008 is an apocalyptic number.

It is an amenable number.

61012421008 is an abundant number, since it is smaller than the sum of its proper divisors (86368235312).

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

61012421008 is a wasteful number, since it uses less digits than its factorization.

61012421008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49523095 (or 49523089 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The spelling of 61012421008 in words is "sixty-one billion, twelve million, four hundred twenty-one thousand, eight".