2153421835387 has 2 divisors, whose sum is σ = 2153421835388. Its totient is φ = 2153421835386.

The previous prime is 2153421835333. The next prime is 2153421835391. The reversal of 2153421835387 is 7835381243512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2153421835387 - 2⁷ = 2153421835259 is a prime.

It is a super-2 number, since 2×2153421835387² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2153421838387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076710917693 + 1076710917694.

It is an arithmetic number, because the mean of its divisors is an integer number (1076710917694).

Almost surely, 2^{2153421835387} is an apocalyptic number.

2153421835387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153421835387 is an equidigital number, since it uses as much as digits as its factorization.

2153421835387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 52.

The spelling of 2153421835387 in words is "two trillion, one hundred fifty-three billion, four hundred twenty-one million, eight hundred thirty-five thousand, three hundred eighty-seven".