203426379587 has 16 divisors (see below), whose sum is σ = 212206132992. Its totient is φ = 194786242560.

The previous prime is 203426379571. The next prime is 203426379593. The reversal of 203426379587 is 785973624302.

It is a cyclic number.

It is not a de Polignac number, because 203426379587 - 2⁴ = 203426379571 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203426379787) 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, 19952363 + ... + 19962555.

It is an arithmetic number, because the mean of its divisors is an integer number (13262883312).

Almost surely, 2^203426379587 is an apocalyptic number.

203426379587 is a deficient number, since it is larger than the sum of its proper divisors (8779753405).

203426379587 is a wasteful number, since it uses less digits than its factorization.

203426379587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16958.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 203426379587 in words is "two hundred three billion, four hundred twenty-six million, three hundred seventy-nine thousand, five hundred eighty-seven".