77245456027 has 4 divisors (see below), whose sum is σ = 78888976416. Its totient is φ = 75601935640.

The previous prime is 77245456021. The next prime is 77245456039. The reversal of 77245456027 is 72065454277.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77245456027 - 2³ = 77245456019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77245456021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821760124 + ... + 821760217.

It is an arithmetic number, because the mean of its divisors is an integer number (19722244104).

Almost surely, 2^77245456027 is an apocalyptic number.

77245456027 is a deficient number, since it is larger than the sum of its proper divisors (1643520389).

77245456027 is a wasteful number, since it uses less digits than its factorization.

77245456027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643520388.

The product of its (nonzero) digits is 3292800, while the sum is 49.

The spelling of 77245456027 in words is "seventy-seven billion, two hundred forty-five million, four hundred fifty-six thousand, twenty-seven".