77803055734554 has 12 divisors (see below), whose sum is σ = 168573287424906. Its totient is φ = 25934351911512.

The previous prime is 77803055734549. The next prime is 77803055734583. The reversal of 77803055734554 is 45543755030877.

77803055734554 is a `hidden beast` number, since 7 + 7 + 8 + 0 + 3 + 0 + 5 + 5 + 73 + 4 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63652871975625 + 14150183758929 = 7978275^2 + 3761673^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77803055734491 and 77803055734500.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2161195992609 + ... + 2161195992644.

Almost surely, 2^{77803055734554} is an apocalyptic number.

77803055734554 is an abundant number, since it is smaller than the sum of its proper divisors (90770231690352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77803055734554 is a wasteful number, since it uses less digits than its factorization.

77803055734554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322391985261 (or 4322391985258 counting only the distinct ones).

The product of its (nonzero) digits is 246960000, while the sum is 63.

The spelling of 77803055734554 in words is "seventy-seven trillion, eight hundred three billion, fifty-five million, seven hundred thirty-four thousand, five hundred fifty-four".