269557009381 has 32 divisors (see below), whose sum is σ = 307843441920. Its totient is φ = 233779392000.

The previous prime is 269557009357. The next prime is 269557009391. The reversal of 269557009381 is 183900755962.

It is not a de Polignac number, because 269557009381 - 2¹⁵ = 269556976613 is a prime.

It is a super-2 number, since 2×269557009381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (269557009391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16197841 + ... + 16214473.

It is an arithmetic number, because the mean of its divisors is an integer number (9620107560).

Almost surely, 2^269557009381 is an apocalyptic number.

It is an amenable number.

269557009381 is a deficient number, since it is larger than the sum of its proper divisors (38286432539).

269557009381 is a wasteful number, since it uses less digits than its factorization.

269557009381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17277.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 269557009381 in words is "two hundred sixty-nine billion, five hundred fifty-seven million, nine thousand, three hundred eighty-one".