77853014892 has 60 divisors (see below), whose sum is σ = 203766449040. Its totient is φ = 25919983584.

The previous prime is 77853014867. The next prime is 77853014917. The reversal of 77853014892 is 29841035877.

It is a happy number.

77853014892 is a `hidden beast` number, since 7 + 7 + 8 + 530 + 14 + 8 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (77853014867) and next prime (77853014917).

It is a super-2 number, since 2×77853014892² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 128638 + ... + 415034.

It is an arithmetic number, because the mean of its divisors is an integer number (3396107484).

Almost surely, 2^77853014892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77853014892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101883224520).

77853014892 is an abundant number, since it is smaller than the sum of its proper divisors (125913434148).

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

77853014892 is a wasteful number, since it uses less digits than its factorization.

77853014892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287252 (or 287241 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 77853014892 in words is "seventy-seven billion, eight hundred fifty-three million, fourteen thousand, eight hundred ninety-two".