26042621553 has 16 divisors (see below), whose sum is σ = 41549482240. Its totient is φ = 16026228432.

The previous prime is 26042621551. The next prime is 26042621573. The reversal of 26042621553 is 35512624062.

26042621553 is a `hidden beast` number, since 2 + 6 + 0 + 42 + 62 + 1 + 553 = 666.

It is not a de Polignac number, because 26042621553 - 2¹ = 26042621551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26042621551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37097401 + ... + 37098102.

It is an arithmetic number, because the mean of its divisors is an integer number (2596842640).

Almost surely, 2^26042621553 is an apocalyptic number.

It is an amenable number.

26042621553 is a deficient number, since it is larger than the sum of its proper divisors (15506860687).

26042621553 is a wasteful number, since it uses less digits than its factorization.

26042621553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74195525 (or 74195519 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 26042621553 in words is "twenty-six billion, forty-two million, six hundred twenty-one thousand, five hundred fifty-three".