20887006148139 has 8 divisors (see below), whose sum is σ = 29060182467072. Its totient is φ = 13319250297320.

The previous prime is 20887006148131. The next prime is 20887006148167. The reversal of 20887006148139 is 93184160078802.

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 20887006148139 - 2³ = 20887006148131 is a prime.

It is a super-2 number, since 2×20887006148139² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20887006148131) 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, 151355116947 + ... + 151355117084.

It is an arithmetic number, because the mean of its divisors is an integer number (3632522808384).

Almost surely, 2^{20887006148139} is an apocalyptic number.

20887006148139 is a deficient number, since it is larger than the sum of its proper divisors (8173176318933).

20887006148139 is a wasteful number, since it uses less digits than its factorization.

20887006148139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302710234057.

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 20887006148139 in words is "twenty trillion, eight hundred eighty-seven billion, six million, one hundred forty-eight thousand, one hundred thirty-nine".