77053180381 has 2 divisors, whose sum is σ = 77053180382. Its totient is φ = 77053180380.

The previous prime is 77053180363. The next prime is 77053180397. The reversal of 77053180381 is 18308135077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46522607481 + 30530572900 = 215691^2 + 174730^2 .

It is an emirp because it is prime and its reverse (18308135077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77053180381 - 2¹⁷ = 77053049309 is a prime.

It is a super-2 number, since 2×77053180381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77153180381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38526590190 + 38526590191.

It is an arithmetic number, because the mean of its divisors is an integer number (38526590191).

Almost surely, 2^77053180381 is an apocalyptic number.

It is an amenable number.

77053180381 is a deficient number, since it is larger than the sum of its proper divisors (1).

77053180381 is an equidigital number, since it uses as much as digits as its factorization.

77053180381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 77053180381 in words is "seventy-seven billion, fifty-three million, one hundred eighty thousand, three hundred eighty-one".