13158540251021 has 8 divisors (see below), whose sum is σ = 14360424924000. Its totient is φ = 11957597868240.

The previous prime is 13158540251009. The next prime is 13158540251047. The reversal of 13158540251021 is 12015204585131.

It is a happy number.

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 13158540251021 - 2⁴² = 8760493739917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13158540251081) 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, 235543346 + ... + 235599203.

It is an arithmetic number, because the mean of its divisors is an integer number (1795053115500).

Almost surely, 2^{13158540251021} is an apocalyptic number.

13158540251021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13158540251021 is a deficient number, since it is larger than the sum of its proper divisors (1201884672979).

13158540251021 is a wasteful number, since it uses less digits than its factorization.

13158540251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471145099.

The product of its (nonzero) digits is 48000, while the sum is 38.

The spelling of 13158540251021 in words is "thirteen trillion, one hundred fifty-eight billion, five hundred forty million, two hundred fifty-one thousand, twenty-one".