26461563903 has 6 divisors (see below), whose sum is σ = 38222258984. Its totient is φ = 17641042596.

The previous prime is 26461563899. The next prime is 26461563943. The reversal of 26461563903 is 30936516462.

26461563903 is a `hidden beast` number, since 2 + 6 + 4 + 6 + 1 + 5 + 639 + 0 + 3 = 666.

It is not a de Polignac number, because 26461563903 - 2² = 26461563899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26461563943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1470086875 + ... + 1470086892.

Almost surely, 2^26461563903 is an apocalyptic number.

26461563903 is a deficient number, since it is larger than the sum of its proper divisors (11760695081).

26461563903 is a wasteful number, since it uses less digits than its factorization.

26461563903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940173773 (or 2940173770 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 26461563903 in words is "twenty-six billion, four hundred sixty-one million, five hundred sixty-three thousand, nine hundred three".