102131863772 has 12 divisors (see below), whose sum is σ = 180500373816. Its totient is φ = 50560328400.

The previous prime is 102131863763. The next prime is 102131863783. The reversal of 102131863772 is 277368131201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126400418 + ... + 126401225.

It is an arithmetic number, because the mean of its divisors is an integer number (15041697818).

Almost surely, 2^102131863772 is an apocalyptic number.

It is an amenable number.

102131863772 is a deficient number, since it is larger than the sum of its proper divisors (78368510044).

102131863772 is a wasteful number, since it uses less digits than its factorization.

102131863772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252801748 (or 252801746 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

Adding to 102131863772 its reverse (277368131201), we get a palindrome (379499994973).

The spelling of 102131863772 in words is "one hundred two billion, one hundred thirty-one million, eight hundred sixty-three thousand, seven hundred seventy-two".