2003156443015 has 48 divisors (see below), whose sum is σ = 3014363655072. Its totient is φ = 1266658235136.

The previous prime is 2003156443003. The next prime is 2003156443033. The reversal of 2003156443015 is 5103446513002.

It is not a de Polignac number, because 2003156443015 - 2²³ = 2003148054407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2860032 + ... + 3490858.

It is an arithmetic number, because the mean of its divisors is an integer number (62799242814).

Almost surely, 2^{2003156443015} is an apocalyptic number.

2003156443015 is a deficient number, since it is larger than the sum of its proper divisors (1011207212057).

2003156443015 is a wasteful number, since it uses less digits than its factorization.

2003156443015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631856 (or 631849 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 2003156443015 in words is "two trillion, three billion, one hundred fifty-six million, four hundred forty-three thousand, fifteen".