102478198712 has 32 divisors (see below), whose sum is σ = 203499475200. Its totient is φ = 48213156864.

The previous prime is 102478198703. The next prime is 102478198717. The reversal of 102478198712 is 217891874201.

It is a super-2 number, since 2×102478198712² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102478198717) 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, 474089 + ... + 655527.

It is an arithmetic number, because the mean of its divisors is an integer number (6359358600).

Almost surely, 2^102478198712 is an apocalyptic number.

It is an amenable number.

102478198712 is a deficient number, since it is larger than the sum of its proper divisors (101021276488).

102478198712 is a wasteful number, since it uses less digits than its factorization.

102478198712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185615 (or 185611 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 50.

The spelling of 102478198712 in words is "one hundred two billion, four hundred seventy-eight million, one hundred ninety-eight thousand, seven hundred twelve".