26601455897 has 4 divisors (see below), whose sum is σ = 27758040960. Its totient is φ = 25444870836.

The previous prime is 26601455863. The next prime is 26601455929. The reversal of 26601455897 is 79855410662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 26601455897 - 2¹² = 26601451801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26601455807) 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, 578292497 + ... + 578292542.

It is an arithmetic number, because the mean of its divisors is an integer number (6939510240).

Almost surely, 2^26601455897 is an apocalyptic number.

It is an amenable number.

26601455897 is a deficient number, since it is larger than the sum of its proper divisors (1156585063).

26601455897 is a wasteful number, since it uses less digits than its factorization.

26601455897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156585062.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 26601455897 in words is "twenty-six billion, six hundred one million, four hundred fifty-five thousand, eight hundred ninety-seven".