77574504485 has 16 divisors (see below), whose sum is σ = 96666197040. Its totient is φ = 59716546560.

The previous prime is 77574504479. The next prime is 77574504503. The reversal of 77574504485 is 58440547577.

It is a Cunningham number, because it is equal to 278522²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 424442404 + 77150062081 = 20602^2 + 277759^2 .

It is not a de Polignac number, because 77574504485 - 2¹² = 77574500389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77574504485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2576900 + ... + 2606829.

It is an arithmetic number, because the mean of its divisors is an integer number (6041637315).

Almost surely, 2^77574504485 is an apocalyptic number.

It is an amenable number.

77574504485 is a deficient number, since it is larger than the sum of its proper divisors (19091692555).

77574504485 is a wasteful number, since it uses less digits than its factorization.

77574504485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183848.

The product of its (nonzero) digits is 21952000, while the sum is 56.

The spelling of 77574504485 in words is "seventy-seven billion, five hundred seventy-four million, five hundred four thousand, four hundred eighty-five".