1351340265406 has 16 divisors (see below), whose sum is σ = 2047392663264. Its totient is φ = 668880548064.

The previous prime is 1351340265403. The next prime is 1351340265419. The reversal of 1351340265406 is 6045620431531.

It is a super-2 number, since 2×1351340265406² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351340265403) 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, 523525 + ... + 1725328.

It is an arithmetic number, because the mean of its divisors is an integer number (127962041454).

Almost surely, 2^{1351340265406} is an apocalyptic number.

1351340265406 is a deficient number, since it is larger than the sum of its proper divisors (696052397858).

1351340265406 is a wasteful number, since it uses less digits than its factorization.

1351340265406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251875.

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 1351340265406 its reverse (6045620431531), we get a palindrome (7396960696937).

The spelling of 1351340265406 in words is "one trillion, three hundred fifty-one billion, three hundred forty million, two hundred sixty-five thousand, four hundred six".