2157434031059 has 2 divisors, whose sum is σ = 2157434031060. Its totient is φ = 2157434031058.

The previous prime is 2157434031041. The next prime is 2157434031097. The reversal of 2157434031059 is 9501304347512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2157434031059 is a prime.

It is a super-2 number, since 2×2157434031059² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2157434031019) 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 as a sum of consecutive naturals, namely, 1078717015529 + 1078717015530.

It is an arithmetic number, because the mean of its divisors is an integer number (1078717015530).

Almost surely, 2^{2157434031059} is an apocalyptic number.

2157434031059 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157434031059 is an equidigital number, since it uses as much as digits as its factorization.

2157434031059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 2157434031059 in words is "two trillion, one hundred fifty-seven billion, four hundred thirty-four million, thirty-one thousand, fifty-nine".