1214894823681 has 32 divisors (see below), whose sum is σ = 2138363394048. Its totient is φ = 593989827840.

The previous prime is 1214894823677. The next prime is 1214894823683. The reversal of 1214894823681 is 1863284984121.

It is not a de Polignac number, because 1214894823681 - 2² = 1214894823677 is a prime.

It is a super-2 number, since 2×1214894823681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1214894823683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154680925 + ... + 154688778.

It is an arithmetic number, because the mean of its divisors is an integer number (66823856064).

Almost surely, 2^{1214894823681} is an apocalyptic number.

1214894823681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214894823681 is a deficient number, since it is larger than the sum of its proper divisors (923468570367).

1214894823681 is a wasteful number, since it uses less digits than its factorization.

1214894823681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309369741.

The product of its digits is 5308416, while the sum is 57.

The spelling of 1214894823681 in words is "one trillion, two hundred fourteen billion, eight hundred ninety-four million, eight hundred twenty-three thousand, six hundred eighty-one".