26610661455 has 16 divisors (see below), whose sum is σ = 48659495424. Its totient is φ = 12164873760.

The previous prime is 26610661421. The next prime is 26610661477. The reversal of 26610661455 is 55416601662.

It is not a de Polignac number, because 26610661455 - 2⁸ = 26610661199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126717331 + ... + 126717540.

It is an arithmetic number, because the mean of its divisors is an integer number (3041218464).

Almost surely, 2^26610661455 is an apocalyptic number.

26610661455 is a deficient number, since it is larger than the sum of its proper divisors (22048833969).

26610661455 is a wasteful number, since it uses less digits than its factorization.

26610661455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253434886.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 26610661455 in words is "twenty-six billion, six hundred ten million, six hundred sixty-one thousand, four hundred fifty-five".