20520155130654 has 32 divisors (see below), whose sum is σ = 43644203615520. Its totient is φ = 6409583511552.

The previous prime is 20520155130653. The next prime is 20520155130667. The reversal of 20520155130654 is 45603155102502.

It is a super-2 number, since 2×20520155130654² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20520155130653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439229899 + ... + 439276614.

It is an arithmetic number, because the mean of its divisors is an integer number (1363881362985).

Almost surely, 2^{20520155130654} is an apocalyptic number.

20520155130654 is an abundant number, since it is smaller than the sum of its proper divisors (23124048484866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20520155130654 is a wasteful number, since it uses less digits than its factorization.

20520155130654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878506764.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 20520155130654 in words is "twenty trillion, five hundred twenty billion, one hundred fifty-five million, one hundred thirty thousand, six hundred fifty-four".