2157424246526 has 8 divisors (see below), whose sum is σ = 3406459336680. Its totient is φ = 1021937800968.

The previous prime is 2157424246517. The next prime is 2157424246529. The reversal of 2157424246526 is 6256424247512.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157424246529) 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, 28387161101 + ... + 28387161176.

It is an arithmetic number, because the mean of its divisors is an integer number (425807417085).

Almost surely, 2^{2157424246526} is an apocalyptic number.

2157424246526 is a deficient number, since it is larger than the sum of its proper divisors (1249035090154).

2157424246526 is a wasteful number, since it uses less digits than its factorization.

2157424246526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56774322298.

The product of its digits is 6451200, while the sum is 50.

The spelling of 2157424246526 in words is "two trillion, one hundred fifty-seven billion, four hundred twenty-four million, two hundred forty-six thousand, five hundred twenty-six".