62769789981 has 12 divisors (see below), whose sum is σ = 90672491260. Its totient is φ = 41844211200.

The previous prime is 62769789959. The next prime is 62769790003. The reversal of 62769789981 is 18998796726.

It is an interprime number because it is at equal distance from previous prime (62769789959) and next prime (62769790003).

It can be written as a sum of positive squares in 2 ways, for example, as 55241451225 + 7528338756 = 235035^2 + 86766^2 .

It is not a de Polignac number, because 62769789981 - 2⁷ = 62769789853 is a prime.

It is a super-2 number, since 2×62769789981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (62769789881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12370 + ... + 354531.

Almost surely, 2^62769789981 is an apocalyptic number.

It is an amenable number.

62769789981 is a deficient number, since it is larger than the sum of its proper divisors (27902701279).

62769789981 is a wasteful number, since it uses less digits than its factorization.

62769789981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385916 (or 385913 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 72.

The spelling of 62769789981 in words is "sixty-two billion, seven hundred sixty-nine million, seven hundred eighty-nine thousand, nine hundred eighty-one".