77488080509284 has 24 divisors (see below), whose sum is σ = 135710882307000. Its totient is φ = 38713543814400.

The previous prime is 77488080509209. The next prime is 77488080509303. The reversal of 77488080509284 is 48290508088477.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 179672558884 + 77308407950400 = 423878^2 + 8792520^2 .

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, 384209382 + ... + 384411010.

It is an arithmetic number, because the mean of its divisors is an integer number (5654620096125).

Almost surely, 2^{77488080509284} is an apocalyptic number.

It is an amenable number.

77488080509284 is a deficient number, since it is larger than the sum of its proper divisors (58222801797716).

77488080509284 is a wasteful number, since it uses less digits than its factorization.

77488080509284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276783 (or 276781 counting only the distinct ones).

The product of its (nonzero) digits is 289013760, while the sum is 70.

The spelling of 77488080509284 in words is "seventy-seven trillion, four hundred eighty-eight billion, eighty million, five hundred nine thousand, two hundred eighty-four".