81748663010 has 16 divisors (see below), whose sum is σ = 168168678336. Its totient is φ = 28028113008.

The previous prime is 81748663001. The next prime is 81748663019. The reversal of 81748663010 is 1036684718.

It is an interprime number because it is at equal distance from previous prime (81748663001) and next prime (81748663019).

It is not an unprimeable number, because it can be changed into a prime (81748663019) 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, 583918952 + ... + 583919091.

It is an arithmetic number, because the mean of its divisors is an integer number (10510542396).

Almost surely, 2^81748663010 is an apocalyptic number.

81748663010 is an abundant number, since it is smaller than the sum of its proper divisors (86420015326).

81748663010 is a wasteful number, since it uses less digits than its factorization.

81748663010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167838057.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 81748663010 in words is "eighty-one billion, seven hundred forty-eight million, six hundred sixty-three thousand, ten".