77550860641 has 8 divisors (see below), whose sum is σ = 79375134080. Its totient is φ = 75727531152.

The previous prime is 77550860573. The next prime is 77550860669. The reversal of 77550860641 is 14606805577.

It is a happy number.

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 77550860641 - 2³³ = 68960926049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77550860341) 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, 68361 + ... + 399718.

It is an arithmetic number, because the mean of its divisors is an integer number (9921891760).

Almost surely, 2^77550860641 is an apocalyptic number.

It is an amenable number.

77550860641 is a deficient number, since it is larger than the sum of its proper divisors (1824273439).

77550860641 is a wasteful number, since it uses less digits than its factorization.

77550860641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471975.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 77550860641 in words is "seventy-seven billion, five hundred fifty million, eight hundred sixty thousand, six hundred forty-one".