20147755624877 has 16 divisors (see below), whose sum is σ = 22459325232960. Its totient is φ = 17961664396032.

The previous prime is 20147755624861. The next prime is 20147755624889. The reversal of 20147755624877 is 77842655774102.

It is a cyclic number.

It is not a de Polignac number, because 20147755624877 - 2⁴ = 20147755624861 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 (20147755624897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3024398 + ... + 7031535.

It is an arithmetic number, because the mean of its divisors is an integer number (1403707827060).

Almost surely, 2^{20147755624877} is an apocalyptic number.

It is an amenable number.

20147755624877 is a deficient number, since it is larger than the sum of its proper divisors (2311569608083).

20147755624877 is a wasteful number, since it uses less digits than its factorization.

20147755624877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062172.

The product of its (nonzero) digits is 184396800, while the sum is 65.

The spelling of 20147755624877 in words is "twenty trillion, one hundred forty-seven billion, seven hundred fifty-five million, six hundred twenty-four thousand, eight hundred seventy-seven".