20151540003 has 16 divisors (see below), whose sum is σ = 30769664256. Its totient is φ = 11491707360.

The previous prime is 20151540001. The next prime is 20151540007. The reversal of 20151540003 is 30004515102.

It is not a de Polignac number, because 20151540003 - 2¹ = 20151540001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20151540001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966876 + ... + 987497.

It is an arithmetic number, because the mean of its divisors is an integer number (1923104016).

Almost surely, 2^20151540003 is an apocalyptic number.

20151540003 is a deficient number, since it is larger than the sum of its proper divisors (10618124253).

20151540003 is a wasteful number, since it uses less digits than its factorization.

20151540003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954874.

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 20151540003 in words is "twenty billion, one hundred fifty-one million, five hundred forty thousand, three".