2157426043503 has 8 divisors (see below), whose sum is σ = 2919501909888. Its totient is φ = 1416817103064.

The previous prime is 2157426043499. The next prime is 2157426043537. The reversal of 2157426043503 is 3053406247512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2157426043503 - 2² = 2157426043499 is a prime.

It is a super-2 number, since 2×2157426043503² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157426043543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5366731251 + ... + 5366731652.

It is an arithmetic number, because the mean of its divisors is an integer number (364937738736).

Almost surely, 2^{2157426043503} is an apocalyptic number.

2157426043503 is a deficient number, since it is larger than the sum of its proper divisors (762075866385).

2157426043503 is a wasteful number, since it uses less digits than its factorization.

2157426043503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733462973.

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 2157426043503 in words is "two trillion, one hundred fifty-seven billion, four hundred twenty-six million, forty-three thousand, five hundred three".