77442149071 has 16 divisors (see below), whose sum is σ = 91556075520. Its totient is φ = 64100089440.

The previous prime is 77442149063. The next prime is 77442149093. The reversal of 77442149071 is 17094124477.

It is a cyclic number.

It is not a de Polignac number, because 77442149071 - 2³ = 77442149063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77442149371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280756 + ... + 483433.

It is an arithmetic number, because the mean of its divisors is an integer number (5722254720).

Almost surely, 2^77442149071 is an apocalyptic number.

77442149071 is a deficient number, since it is larger than the sum of its proper divisors (14113926449).

77442149071 is a wasteful number, since it uses less digits than its factorization.

77442149071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764694.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 77442149071 in words is "seventy-seven billion, four hundred forty-two million, one hundred forty-nine thousand, seventy-one".