77455550475 has 18 divisors (see below), whose sum is σ = 138731497476. Its totient is φ = 41309626800.

The previous prime is 77455550383. The next prime is 77455550477. The reversal of 77455550475 is 57405555477.

77455550475 is a `hidden beast` number, since 7 + 7 + 45 + 5 + 550 + 47 + 5 = 666.

It is not a de Polignac number, because 77455550475 - 2¹⁵ = 77455517707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77455550477) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 172123221 + ... + 172123670.

Almost surely, 2^77455550475 is an apocalyptic number.

77455550475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77455550475 is a deficient number, since it is larger than the sum of its proper divisors (61275947001).

77455550475 is a wasteful number, since it uses less digits than its factorization.

77455550475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344246907 (or 344246899 counting only the distinct ones).

The product of its (nonzero) digits is 17150000, while the sum is 54.

The spelling of 77455550475 in words is "seventy-seven billion, four hundred fifty-five million, five hundred fifty thousand, four hundred seventy-five".