102125661236 has 6 divisors (see below), whose sum is σ = 178719907170. Its totient is φ = 51062830616.

The previous prime is 102125661233. The next prime is 102125661241. The reversal of 102125661236 is 632166521201.

102125661236 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 101565865636 + 559795600 = 318694^2 + 23660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102125661196 and 102125661205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102125661233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765707651 + ... + 12765707658.

It is an arithmetic number, because the mean of its divisors is an integer number (29786651195).

Almost surely, 2^102125661236 is an apocalyptic number.

It is an amenable number.

102125661236 is a deficient number, since it is larger than the sum of its proper divisors (76594245934).

102125661236 is a wasteful number, since it uses less digits than its factorization.

102125661236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25531415313 (or 25531415311 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 102125661236 in words is "one hundred two billion, one hundred twenty-five million, six hundred sixty-one thousand, two hundred thirty-six".