26521663416 has 32 divisors (see below), whose sum is σ = 70204404240. Its totient is φ = 8320521728.

The previous prime is 26521663411. The next prime is 26521663459. The reversal of 26521663416 is 61436612562.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26521663411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32501631 + ... + 32502446.

Almost surely, 2^26521663416 is an apocalyptic number.

It is an amenable number.

26521663416 is an abundant number, since it is smaller than the sum of its proper divisors (43682740824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26521663416 is a wasteful number, since it uses less digits than its factorization.

26521663416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65004103 (or 65004099 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 26521663416 in words is "twenty-six billion, five hundred twenty-one million, six hundred sixty-three thousand, four hundred sixteen".