77543271348 has 12 divisors (see below), whose sum is σ = 180934299840. Its totient is φ = 25847757112.

The previous prime is 77543271347. The next prime is 77543271349. The reversal of 77543271348 is 84317234577.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77543271347) and next prime (77543271349).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 77543271348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77543271347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3230969628 + ... + 3230969651.

It is an arithmetic number, because the mean of its divisors is an integer number (15077858320).

Almost surely, 2^77543271348 is an apocalyptic number.

It is an amenable number.

77543271348 is an abundant number, since it is smaller than the sum of its proper divisors (103391028492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77543271348 is a wasteful number, since it uses less digits than its factorization.

77543271348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461939286 (or 6461939284 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 51.

The spelling of 77543271348 in words is "seventy-seven billion, five hundred forty-three million, two hundred seventy-one thousand, three hundred forty-eight".