77745600654776 has 32 divisors (see below), whose sum is σ = 145902156818880. Its totient is φ = 38838363494400.

The previous prime is 77745600654769. The next prime is 77745600654809. The reversal of 77745600654776 is 67745600654777.

It is a super-3 number, since 3×77745600654776³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136810460 + ... + 137377556.

It is an arithmetic number, because the mean of its divisors is an integer number (4559442400590).

Almost surely, 2^{77745600654776} is an apocalyptic number.

It is an amenable number.

77745600654776 is a deficient number, since it is larger than the sum of its proper divisors (68156556164104).

77745600654776 is a wasteful number, since it uses less digits than its factorization.

77745600654776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582255 (or 582251 counting only the distinct ones).

The product of its (nonzero) digits is 1452124800, while the sum is 71.

Subtracting from 77745600654776 its reverse (67745600654777), we obtain a palindrome (9999999999999).

The spelling of 77745600654776 in words is "seventy-seven trillion, seven hundred forty-five billion, six hundred million, six hundred fifty-four thousand, seven hundred seventy-six".