61461406338 has 16 divisors (see below), whose sum is σ = 123464325600. Its totient is φ = 20396883296.

The previous prime is 61461406301. The next prime is 61461406339. The reversal of 61461406338 is 83360416416.

It is a self number, because there is not a number n which added to its sum of digits gives 61461406338.

It is not an unprimeable number, because it can be changed into a prime (61461406339) 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, 22561563 + ... + 22564286.

It is an arithmetic number, because the mean of its divisors is an integer number (7716520350).

Almost surely, 2^61461406338 is an apocalyptic number.

61461406338 is an abundant number, since it is smaller than the sum of its proper divisors (62002919262).

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

61461406338 is a wasteful number, since it uses less digits than its factorization.

61461406338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45126081.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 61461406338 in words is "sixty-one billion, four hundred sixty-one million, four hundred six thousand, three hundred thirty-eight".