61442055464461 has 8 divisors (see below), whose sum is σ = 74350050310080. Its totient is φ = 49566700206528.

The previous prime is 61442055464459. The next prime is 61442055464509. The reversal of 61442055464461 is 16446455024416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61442055464461 - 2¹ = 61442055464459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61442055464399 and 61442055464408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61442055464401) 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, 258159896791 + ... + 258159897028.

It is an arithmetic number, because the mean of its divisors is an integer number (9293756288760).

Almost surely, 2^{61442055464461} is an apocalyptic number.

It is an amenable number.

61442055464461 is a deficient number, since it is larger than the sum of its proper divisors (12907994845619).

61442055464461 is a wasteful number, since it uses less digits than its factorization.

61442055464461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516319793843.

The product of its (nonzero) digits is 11059200, while the sum is 52.

The spelling of 61442055464461 in words is "sixty-one trillion, four hundred forty-two billion, fifty-five million, four hundred sixty-four thousand, four hundred sixty-one".