77851474153 has 2 divisors, whose sum is σ = 77851474154. Its totient is φ = 77851474152.

The previous prime is 77851474111. The next prime is 77851474199. The reversal of 77851474153 is 35147415877.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68056809129 + 9794665024 = 260877^2 + 98968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77851474153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77851474153.

It is not a weakly prime, because it can be changed into another prime (77851474453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38925737076 + 38925737077.

It is an arithmetic number, because the mean of its divisors is an integer number (38925737077).

Almost surely, 2^77851474153 is an apocalyptic number.

It is an amenable number.

77851474153 is a deficient number, since it is larger than the sum of its proper divisors (1).

77851474153 is an equidigital number, since it uses as much as digits as its factorization.

77851474153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3292800, while the sum is 52.

The spelling of 77851474153 in words is "seventy-seven billion, eight hundred fifty-one million, four hundred seventy-four thousand, one hundred fifty-three".