80733677381 has 6 divisors (see below), whose sum is σ = 93914685990. Its totient is φ = 69200294856.

The previous prime is 80733677377. The next prime is 80733677413. The reversal of 80733677381 is 18377633708.

It can be written as a sum of positive squares in only one way, i.e., 70198502500 + 10535174881 = 264950^2 + 102641^2 .

It is not a de Polignac number, because 80733677381 - 2² = 80733677377 is a prime.

It is a super-2 number, since 2×80733677381² (a number of 23 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 (80733677341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 823812986 + ... + 823813083.

It is an arithmetic number, because the mean of its divisors is an integer number (15652447665).

Almost surely, 2^80733677381 is an apocalyptic number.

It is an amenable number.

80733677381 is a deficient number, since it is larger than the sum of its proper divisors (13181008609).

80733677381 is a wasteful number, since it uses less digits than its factorization.

80733677381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647626083 (or 1647626076 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 80733677381 in words is "eighty billion, seven hundred thirty-three million, six hundred seventy-seven thousand, three hundred eighty-one".