20555043510 has 32 divisors (see below), whose sum is σ = 49339072512. Its totient is φ = 5480570720.

The previous prime is 20555043463. The next prime is 20555043521. The reversal of 20555043510 is 1534055502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186187 + ... + 275273.

It is an arithmetic number, because the mean of its divisors is an integer number (1541846016).

Almost surely, 2^20555043510 is an apocalyptic number.

20555043510 is an abundant number, since it is smaller than the sum of its proper divisors (28784029002).

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

20555043510 is a wasteful number, since it uses less digits than its factorization.

20555043510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96788.

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 20555043510 in words is "twenty billion, five hundred fifty-five million, forty-three thousand, five hundred ten".