102775156660 has 72 divisors (see below), whose sum is σ = 237782546568. Its totient is φ = 37286092800.

The previous prime is 102775156657. The next prime is 102775156697. The reversal of 102775156660 is 66651577201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4064827536 + 98710329124 = 63756^2 + 314182^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102775156660.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 998820 + ... + 1096900.

It is an arithmetic number, because the mean of its divisors is an integer number (3302535369).

Almost surely, 2^102775156660 is an apocalyptic number.

102775156660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102775156660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118891273284).

102775156660 is an abundant number, since it is smaller than the sum of its proper divisors (135007389908).

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

102775156660 is a wasteful number, since it uses less digits than its factorization.

102775156660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98545 (or 98532 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 102775156660 in words is "one hundred two billion, seven hundred seventy-five million, one hundred fifty-six thousand, six hundred sixty".