1281063151438 has 32 divisors (see below), whose sum is σ = 2281357467648. Its totient is φ = 528091972800.

The previous prime is 1281063151369. The next prime is 1281063151457. The reversal of 1281063151438 is 8341513601821.

It is a super-2 number, since 2×1281063151438² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1281063151394 and 1281063151403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15676270 + ... + 15757777.

It is an arithmetic number, because the mean of its divisors is an integer number (71292420864).

Almost surely, 2^{1281063151438} is an apocalyptic number.

1281063151438 is a deficient number, since it is larger than the sum of its proper divisors (1000294316210).

1281063151438 is a wasteful number, since it uses less digits than its factorization.

1281063151438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31434168.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 1281063151438 in words is "one trillion, two hundred eighty-one billion, sixty-three million, one hundred fifty-one thousand, four hundred thirty-eight".