61422065635640 has 64 divisors (see below), whose sum is σ = 138753919740960. Its totient is φ = 24470479434240.

The previous prime is 61422065635639. The next prime is 61422065635649. The reversal of 61422065635640 is 4653656022416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61422065635649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7347887 + ... + 13297953.

Almost surely, 2^{61422065635640} is an apocalyptic number.

It is an amenable number.

61422065635640 is an abundant number, since it is smaller than the sum of its proper divisors (77331854105320).

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

61422065635640 is a wasteful number, since it uses less digits than its factorization.

61422065635640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951112 (or 5951108 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 61422065635640 in words is "sixty-one trillion, four hundred twenty-two billion, sixty-five million, six hundred thirty-five thousand, six hundred forty".