77723227007 has 4 divisors (see below), whose sum is σ = 79376912736. Its totient is φ = 76069541280.

The previous prime is 77723226991. The next prime is 77723227013. The reversal of 77723227007 is 70072232777.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70072232777 = 259163 ⋅270379.

It is a cyclic number.

It is not a de Polignac number, because 77723227007 - 2⁴ = 77723226991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77723227037) 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, 826842794 + ... + 826842887.

It is an arithmetic number, because the mean of its divisors is an integer number (19844228184).

Almost surely, 2^77723227007 is an apocalyptic number.

77723227007 is a deficient number, since it is larger than the sum of its proper divisors (1653685729).

77723227007 is a wasteful number, since it uses less digits than its factorization.

77723227007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653685728.

The product of its (nonzero) digits is 403368, while the sum is 44.

The spelling of 77723227007 in words is "seventy-seven billion, seven hundred twenty-three million, two hundred twenty-seven thousand, seven".