26007989887 has 16 divisors (see below), whose sum is σ = 31164145920. Its totient is φ = 21425342400.

The previous prime is 26007989881. The next prime is 26007989893. The reversal of 26007989887 is 78898970062.

It is an interprime number because it is at equal distance from previous prime (26007989881) and next prime (26007989893).

It is not a de Polignac number, because 26007989887 - 2¹⁹ = 26007465599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26007989881) 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, 2700414 + ... + 2710027.

It is an arithmetic number, because the mean of its divisors is an integer number (1947759120).

Almost surely, 2^26007989887 is an apocalyptic number.

26007989887 is a deficient number, since it is larger than the sum of its proper divisors (5156156033).

26007989887 is a wasteful number, since it uses less digits than its factorization.

26007989887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410494.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 26007989887 in words is "twenty-six billion, seven million, nine hundred eighty-nine thousand, eight hundred eighty-seven".