77551056075 has 24 divisors (see below), whose sum is σ = 129416056128. Its totient is φ = 40974011680.

The previous prime is 77551056071. The next prime is 77551056131. The reversal of 77551056075 is 57065015577.

It is not a de Polignac number, because 77551056075 - 2² = 77551056071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77551056071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4823817 + ... + 4839866.

It is an arithmetic number, because the mean of its divisors is an integer number (5392335672).

Almost surely, 2^77551056075 is an apocalyptic number.

77551056075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

77551056075 is a deficient number, since it is larger than the sum of its proper divisors (51865000053).

77551056075 is a wasteful number, since it uses less digits than its factorization.

77551056075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9663803 (or 9663798 counting only the distinct ones).

The product of its (nonzero) digits is 1286250, while the sum is 48.

The spelling of 77551056075 in words is "seventy-seven billion, five hundred fifty-one million, fifty-six thousand, seventy-five".