977733484649 has 2 divisors, whose sum is σ = 977733484650. Its totient is φ = 977733484648.

The previous prime is 977733484639. The next prime is 977733484723. The reversal of 977733484649 is 946484337779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976974096400 + 759388249 = 988420^2 + 27557^2 .

It is a cyclic number.

It is not a de Polignac number, because 977733484649 - 2³² = 973438517353 is a prime.

It is not a weakly prime, because it can be changed into another prime (977733484639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488866742324 + 488866742325.

It is an arithmetic number, because the mean of its divisors is an integer number (488866742325).

Almost surely, 2^977733484649 is an apocalyptic number.

It is an amenable number.

977733484649 is a deficient number, since it is larger than the sum of its proper divisors (1).

977733484649 is an equidigital number, since it uses as much as digits as its factorization.

977733484649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768144384, while the sum is 71.

The spelling of 977733484649 in words is "nine hundred seventy-seven billion, seven hundred thirty-three million, four hundred eighty-four thousand, six hundred forty-nine".