61774042360621 has 8 divisors (see below), whose sum is σ = 64573927500800. Its totient is φ = 59024605601520.

The previous prime is 61774042360601. The next prime is 61774042360643. The reversal of 61774042360621 is 12606324047716.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61774042360621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61774042360601) 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, 12612092766 + ... + 12612097663.

It is an arithmetic number, because the mean of its divisors is an integer number (8071740937600).

Almost surely, 2^{61774042360621} is an apocalyptic number.

It is an amenable number.

61774042360621 is a deficient number, since it is larger than the sum of its proper divisors (2799885140179).

61774042360621 is a wasteful number, since it uses less digits than its factorization.

61774042360621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25224190539.

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 61774042360621 in words is "sixty-one trillion, seven hundred seventy-four billion, forty-two million, three hundred sixty thousand, six hundred twenty-one".