77455550473 has 4 divisors (see below), whose sum is σ = 88520629120. Its totient is φ = 66390471828.

The previous prime is 77455550383. The next prime is 77455550477. The reversal of 77455550473 is 37405555477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77455550473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77455550473.

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 3 ways as a sum of consecutive naturals, for example, 5532539313 + ... + 5532539326.

It is an arithmetic number, because the mean of its divisors is an integer number (22130157280).

Almost surely, 2^77455550473 is an apocalyptic number.

It is an amenable number.

77455550473 is a deficient number, since it is larger than the sum of its proper divisors (11065078647).

77455550473 is a wasteful number, since it uses less digits than its factorization.

77455550473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11065078646.

The product of its (nonzero) digits is 10290000, while the sum is 52.

The spelling of 77455550473 in words is "seventy-seven billion, four hundred fifty-five million, five hundred fifty thousand, four hundred seventy-three".