2157434029039 has 2 divisors, whose sum is σ = 2157434029040. Its totient is φ = 2157434029038.

The previous prime is 2157434029031. The next prime is 2157434029087. The reversal of 2157434029039 is 9309204347512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2157434029039 - 2³ = 2157434029031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2157434028983 and 2157434029001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157434029031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078717014519 + 1078717014520.

It is an arithmetic number, because the mean of its divisors is an integer number (1078717014520).

Almost surely, 2^{2157434029039} is an apocalyptic number.

2157434029039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157434029039 is an equidigital number, since it uses as much as digits as its factorization.

2157434029039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 2157434029039 in words is "two trillion, one hundred fifty-seven billion, four hundred thirty-four million, twenty-nine thousand, thirty-nine".