1406387271743 has 16 divisors (see below), whose sum is σ = 1430034518016. Its totient is φ = 1382849438880.

The previous prime is 1406387271733. The next prime is 1406387271781. The reversal of 1406387271743 is 3471727836041.

It is a Cunningham number, because it is equal to 1185912²-1.

It is a cyclic number.

It is not a de Polignac number, because 1406387271743 - 2⁴⁰ = 306875643967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406387271733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84191330 + ... + 84208032.

It is an arithmetic number, because the mean of its divisors is an integer number (89377157376).

Almost surely, 2^{1406387271743} is an apocalyptic number.

1406387271743 is a deficient number, since it is larger than the sum of its proper divisors (23647246273).

1406387271743 is a wasteful number, since it uses less digits than its factorization.

1406387271743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894.

The product of its (nonzero) digits is 4741632, while the sum is 53.

The spelling of 1406387271743 in words is "one trillion, four hundred six billion, three hundred eighty-seven million, two hundred seventy-one thousand, seven hundred forty-three".