20014553550 has 48 divisors (see below), whose sum is σ = 49893346800. Its totient is φ = 5309552640.

The previous prime is 20014553549. The next prime is 20014553557. The reversal of 20014553550 is 5535541002.

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 not an unprimeable number, because it can be changed into a prime (20014553557) 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, 316725 + ... + 374624.

It is an arithmetic number, because the mean of its divisors is an integer number (1039444725).

Almost surely, 2^20014553550 is an apocalyptic number.

20014553550 is an abundant number, since it is smaller than the sum of its proper divisors (29878793250).

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

20014553550 is a wasteful number, since it uses less digits than its factorization.

20014553550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691557 (or 691552 counting only the distinct ones).

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

The spelling of 20014553550 in words is "twenty billion, fourteen million, five hundred fifty-three thousand, five hundred fifty".