1355261611431 has 32 divisors (see below), whose sum is σ = 2236874734080. Its totient is φ = 710731085184.

The previous prime is 1355261611423. The next prime is 1355261611597. The reversal of 1355261611431 is 1341161625531.

It is not a de Polignac number, because 1355261611431 - 2³ = 1355261611423 is a prime.

It is a super-2 number, since 2×1355261611431² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1355261611431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355261611931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14300541 + ... + 14394998.

It is an arithmetic number, because the mean of its divisors is an integer number (69902335440).

Almost surely, 2^{1355261611431} is an apocalyptic number.

1355261611431 is a deficient number, since it is larger than the sum of its proper divisors (881613122649).

1355261611431 is a wasteful number, since it uses less digits than its factorization.

1355261611431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28695735.

The product of its digits is 64800, while the sum is 39.

The spelling of 1355261611431 in words is "one trillion, three hundred fifty-five billion, two hundred sixty-one million, six hundred eleven thousand, four hundred thirty-one".