20257723162641 has 8 divisors (see below), whose sum is σ = 28599138582624. Its totient is φ = 12710728258880.

The previous prime is 20257723162559. The next prime is 20257723162681. The reversal of 20257723162641 is 14626132775202.

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

It is a cyclic number.

It is not a de Polignac number, because 20257723162641 - 2¹⁴ = 20257723146257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20257723162681) 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, 198605128995 + ... + 198605129096.

It is an arithmetic number, because the mean of its divisors is an integer number (3574892322828).

Almost surely, 2^{20257723162641} is an apocalyptic number.

It is an amenable number.

20257723162641 is a deficient number, since it is larger than the sum of its proper divisors (8341415419983).

20257723162641 is a wasteful number, since it uses less digits than its factorization.

20257723162641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397210258111.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 20257723162641 in words is "twenty trillion, two hundred fifty-seven billion, seven hundred twenty-three million, one hundred sixty-two thousand, six hundred forty-one".