1355872785531 has 24 divisors (see below), whose sum is σ = 1987305415872. Its totient is φ = 821664135600.

The previous prime is 1355872785529. The next prime is 1355872785541.

1355872785531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1355872785531 - 2¹ = 1355872785529 is a prime.

It is a super-2 number, since 2×1355872785531² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1355872785541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3833436 + ... + 4172166.

It is an arithmetic number, because the mean of its divisors is an integer number (82804392328).

Almost surely, 2^{1355872785531} is an apocalyptic number.

1355872785531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1355872785531 is a deficient number, since it is larger than the sum of its proper divisors (631432630341).

1355872785531 is a wasteful number, since it uses less digits than its factorization.

1355872785531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349783 (or 349772 counting only the distinct ones).

The product of its digits is 35280000, while the sum is 60.

The spelling of 1355872785531 in words is "one trillion, three hundred fifty-five billion, eight hundred seventy-two million, seven hundred eighty-five thousand, five hundred thirty-one".