20554531424531 has 24 divisors (see below), whose sum is σ = 22282755870240. Its totient is φ = 18951703370496.

The previous prime is 20554531424507. The next prime is 20554531424533. The reversal of 20554531424531 is 13542413545502.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20554531424531 is a prime.

It is a super-2 number, since 2×20554531424531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20554531424533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 578543090 + ... + 578578616.

It is an arithmetic number, because the mean of its divisors is an integer number (928448161260).

Almost surely, 2^{20554531424531} is an apocalyptic number.

20554531424531 is a deficient number, since it is larger than the sum of its proper divisors (1728224445709).

20554531424531 is a wasteful number, since it uses less digits than its factorization.

20554531424531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39375 (or 39362 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 20554531424531 in words is "twenty trillion, five hundred fifty-four billion, five hundred thirty-one million, four hundred twenty-four thousand, five hundred thirty-one".