1611254642131 has 4 divisors (see below), whose sum is σ = 1611304461432. Its totient is φ = 1611204822832.

The previous prime is 1611254642113. The next prime is 1611254642143. The reversal of 1611254642131 is 1312464521161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1611254642131 - 2²³ = 1611246253523 is a prime.

It is a super-2 number, since 2×1611254642131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1611254642831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24861106 + ... + 24925831.

It is an arithmetic number, because the mean of its divisors is an integer number (402826115358).

Almost surely, 2^{1611254642131} is an apocalyptic number.

1611254642131 is a deficient number, since it is larger than the sum of its proper divisors (49819301).

1611254642131 is an equidigital number, since it uses as much as digits as its factorization.

1611254642131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49819300.

The product of its digits is 34560, while the sum is 37.

The spelling of 1611254642131 in words is "one trillion, six hundred eleven billion, two hundred fifty-four million, six hundred forty-two thousand, one hundred thirty-one".