77741542461721 has 8 divisors (see below), whose sum is σ = 84228866799264. Its totient is φ = 71466917282880.

The previous prime is 77741542461701. The next prime is 77741542461733. The reversal of 77741542461721 is 12716424514777.

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

It is not a de Polignac number, because 77741542461721 - 2³¹ = 77739394978073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77741542461701) 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, 53174788915 + ... + 53174790376.

It is an arithmetic number, because the mean of its divisors is an integer number (10528608349908).

Almost surely, 2^{77741542461721} is an apocalyptic number.

It is an amenable number.

77741542461721 is a deficient number, since it is larger than the sum of its proper divisors (6487324337543).

77741542461721 is a wasteful number, since it uses less digits than its factorization.

77741542461721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106349579351.

The product of its digits is 18439680, while the sum is 58.

The spelling of 77741542461721 in words is "seventy-seven trillion, seven hundred forty-one billion, five hundred forty-two million, four hundred sixty-one thousand, seven hundred twenty-one".