81350268701 has 8 divisors (see below), whose sum is σ = 87628894584. Its totient is φ = 75074630400.

The previous prime is 81350268679. The next prime is 81350268709. The reversal of 81350268701 is 10786205318.

It can be written as a sum of positive squares in 4 ways, for example, as 83083225 + 81267185476 = 9115^2 + 285074^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81350268701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81350268709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690176 + ... + 799401.

It is an arithmetic number, because the mean of its divisors is an integer number (10953611823).

Almost surely, 2^81350268701 is an apocalyptic number.

It is an amenable number.

81350268701 is a deficient number, since it is larger than the sum of its proper divisors (6278625883).

81350268701 is a wasteful number, since it uses less digits than its factorization.

81350268701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493791.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 81350268701 in words is "eighty-one billion, three hundred fifty million, two hundred sixty-eight thousand, seven hundred one".