2157530686411 has 4 divisors (see below), whose sum is σ = 2157714834912. Its totient is φ = 2157346537912.

The previous prime is 2157530686403. The next prime is 2157530686469. The reversal of 2157530686411 is 1146860357512.

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 2157530686411 - 2³ = 2157530686403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157530689411) 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, 92056675 + ... + 92080108.

It is an arithmetic number, because the mean of its divisors is an integer number (539428708728).

Almost surely, 2^{2157530686411} is an apocalyptic number.

2157530686411 is a deficient number, since it is larger than the sum of its proper divisors (184148501).

2157530686411 is a wasteful number, since it uses less digits than its factorization.

2157530686411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184148500.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 2157530686411 in words is "two trillion, one hundred fifty-seven billion, five hundred thirty million, six hundred eighty-six thousand, four hundred eleven".