102661483720 has 32 divisors (see below), whose sum is σ = 231118486200. Its totient is φ = 41041456128.

The previous prime is 102661483703. The next prime is 102661483721. The reversal of 102661483720 is 27384166201.

It can be written as a sum of positive squares in 4 ways, for example, as 71760765924 + 30900717796 = 267882^2 + 175786^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (102661483721) 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, 651075 + ... + 793234.

Almost surely, 2^102661483720 is an apocalyptic number.

102661483720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102661483720 is an abundant number, since it is smaller than the sum of its proper divisors (128457002480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102661483720 is a wasteful number, since it uses less digits than its factorization.

102661483720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446097 (or 1446093 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 102661483720 in words is "one hundred two billion, six hundred sixty-one million, four hundred eighty-three thousand, seven hundred twenty".