77646400045 has 8 divisors (see below), whose sum is σ = 93418960896. Its totient is φ = 61954932816.

The previous prime is 77646400003. The next prime is 77646400063. The reversal of 77646400045 is 54000464677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77646400045 - 2²¹ = 77644302893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77646399974 and 77646400010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20271297 + ... + 20275126.

It is an arithmetic number, because the mean of its divisors is an integer number (11677370112).

Almost surely, 2^77646400045 is an apocalyptic number.

It is an amenable number.

77646400045 is a deficient number, since it is larger than the sum of its proper divisors (15772560851).

77646400045 is a wasteful number, since it uses less digits than its factorization.

77646400045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40546811.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 77646400045 in words is "seventy-seven billion, six hundred forty-six million, four hundred thousand, forty-five".