1400166252681 has 8 divisors (see below), whose sum is σ = 2133586670784. Its totient is φ = 800095001520.

The previous prime is 1400166252677. The next prime is 1400166252689. The reversal of 1400166252681 is 1862526610041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1400166252681 - 2² = 1400166252677 is a prime.

It is a super-2 number, since 2×1400166252681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400166252689) 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, 33337291710 + ... + 33337291751.

It is an arithmetic number, because the mean of its divisors is an integer number (266698333848).

Almost surely, 2^{1400166252681} is an apocalyptic number.

It is an amenable number.

1400166252681 is a deficient number, since it is larger than the sum of its proper divisors (733420418103).

1400166252681 is an equidigital number, since it uses as much as digits as its factorization.

1400166252681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66674583471.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 1400166252681 in words is "one trillion, four hundred billion, one hundred sixty-six million, two hundred fifty-two thousand, six hundred eighty-one".