1678137312926 has 16 divisors (see below), whose sum is σ = 2608566657840. Its totient is φ = 808716437760.

The previous prime is 1678137312919. The next prime is 1678137312967. The reversal of 1678137312926 is 6292137318761.

It is a super-2 number, since 2×1678137312926² (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, 25302611 + ... + 25368846.

It is an arithmetic number, because the mean of its divisors is an integer number (163035416115).

Almost surely, 2^{1678137312926} is an apocalyptic number.

1678137312926 is a deficient number, since it is larger than the sum of its proper divisors (930429344914).

1678137312926 is a wasteful number, since it uses less digits than its factorization.

1678137312926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50672059.

The product of its digits is 4572288, while the sum is 56.

The spelling of 1678137312926 in words is "one trillion, six hundred seventy-eight billion, one hundred thirty-seven million, three hundred twelve thousand, nine hundred twenty-six".