77448998892 has 48 divisors (see below), whose sum is σ = 182247956352. Its totient is φ = 25597578240.

The previous prime is 77448998863. The next prime is 77448998897. The reversal of 77448998892 is 29889984477.

It is not an unprimeable number, because it can be changed into a prime (77448998897) 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, 1892883 + ... + 1933365.

It is an arithmetic number, because the mean of its divisors is an integer number (3796832424).

Almost surely, 2^77448998892 is an apocalyptic number.

It is an amenable number.

77448998892 is an abundant number, since it is smaller than the sum of its proper divisors (104798957460).

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

77448998892 is a wasteful number, since it uses less digits than its factorization.

77448998892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41838 (or 41836 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 75.

The spelling of 77448998892 in words is "seventy-seven billion, four hundred forty-eight million, nine hundred ninety-eight thousand, eight hundred ninety-two".