20003512445 has 16 divisors (see below), whose sum is σ = 28318338048. Its totient is φ = 13274219520.

The previous prime is 20003512423. The next prime is 20003512457. The reversal of 20003512445 is 54421530002.

It is a happy number.

It is not a de Polignac number, because 20003512445 - 2¹⁰ = 20003511421 is a prime.

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, 9217124 + ... + 9219293.

It is an arithmetic number, because the mean of its divisors is an integer number (1769896128).

Almost surely, 2^20003512445 is an apocalyptic number.

It is an amenable number.

20003512445 is a deficient number, since it is larger than the sum of its proper divisors (8314825603).

20003512445 is a wasteful number, since it uses less digits than its factorization.

20003512445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18436460.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20003512445 in words is "twenty billion, three million, five hundred twelve thousand, four hundred forty-five".