1238663438102 has 16 divisors (see below), whose sum is σ = 1877275779792. Its totient is φ = 612905702400.

The previous prime is 1238663438087. The next prime is 1238663438141. The reversal of 1238663438102 is 2018343668321.

It is a super-2 number, since 2×1238663438102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2790878 + ... + 3204110.

It is an arithmetic number, because the mean of its divisors is an integer number (117329736237).

Almost surely, 2^{1238663438102} is an apocalyptic number.

1238663438102 is a deficient number, since it is larger than the sum of its proper divisors (638612341690).

1238663438102 is a wasteful number, since it uses less digits than its factorization.

1238663438102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428783.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 1238663438102 in words is "one trillion, two hundred thirty-eight billion, six hundred sixty-three million, four hundred thirty-eight thousand, one hundred two".