6542668158403 has 32 divisors (see below), whose sum is σ = 7178704094016. Its totient is φ = 5926471723008.

The previous prime is 6542668158373. The next prime is 6542668158421. The reversal of 6542668158403 is 3048518662456.

It is a cyclic number.

It is not a de Polignac number, because 6542668158403 - 2⁵ = 6542668158371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6542668158473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352638175 + ... + 352656727.

It is an arithmetic number, because the mean of its divisors is an integer number (224334502938).

Almost surely, 2^{6542668158403} is an apocalyptic number.

6542668158403 is a deficient number, since it is larger than the sum of its proper divisors (636035935613).

6542668158403 is a wasteful number, since it uses less digits than its factorization.

6542668158403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20503.

The product of its (nonzero) digits is 33177600, while the sum is 58.

The spelling of 6542668158403 in words is "six trillion, five hundred forty-two billion, six hundred sixty-eight million, one hundred fifty-eight thousand, four hundred three".