21867157887339 has 8 divisors (see below), whose sum is σ = 29378777009472. Its totient is φ = 14466822011720.

The previous prime is 21867157887307. The next prime is 21867157887347. The reversal of 21867157887339 is 93378875176812.

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 21867157887339 - 2⁵ = 21867157887307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21867157887349) 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, 27820811169 + ... + 27820811954.

It is an arithmetic number, because the mean of its divisors is an integer number (3672347126184).

Almost surely, 2^{21867157887339} is an apocalyptic number.

21867157887339 is a deficient number, since it is larger than the sum of its proper divisors (7511619122133).

21867157887339 is a wasteful number, since it uses less digits than its factorization.

21867157887339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55641623257.

The product of its digits is 853493760, while the sum is 75.

The spelling of 21867157887339 in words is "twenty-one trillion, eight hundred sixty-seven billion, one hundred fifty-seven million, eight hundred eighty-seven thousand, three hundred thirty-nine".