26199036916 has 12 divisors (see below), whose sum is σ = 49375108132. Its totient is φ = 12091863168.

The previous prime is 26199036833. The next prime is 26199036917. The reversal of 26199036916 is 61963099162.

It can be written as a sum of positive squares in 2 ways, for example, as 8548851600 + 17650185316 = 92460^2 + 132854^2 .

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 503827633 = 26199036916 / (2 + 6 + 1 + 9 + 9 + 0 + 3 + 6 + 9 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26199036917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251913765 + ... + 251913868.

Almost surely, 2^26199036916 is an apocalyptic number.

26199036916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26199036916 is a deficient number, since it is larger than the sum of its proper divisors (23176071216).

26199036916 is a wasteful number, since it uses less digits than its factorization.

26199036916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503827650 (or 503827648 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 26199036916 in words is "twenty-six billion, one hundred ninety-nine million, thirty-six thousand, nine hundred sixteen".