26723430117 has 64 divisors (see below), whose sum is σ = 41092128000. Its totient is φ = 17153337600.

The previous prime is 26723430103. The next prime is 26723430131. The reversal of 26723430117 is 71103432762.

It is an interprime number because it is at equal distance from previous prime (26723430103) and next prime (26723430131).

It is not a de Polignac number, because 26723430117 - 2¹⁴ = 26723413733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26723430017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40923763 + ... + 40924415.

It is an arithmetic number, because the mean of its divisors is an integer number (642064500).

Almost surely, 2^26723430117 is an apocalyptic number.

26723430117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26723430117 is a deficient number, since it is larger than the sum of its proper divisors (14368697883).

26723430117 is a wasteful number, since it uses less digits than its factorization.

26723430117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

Adding to 26723430117 its reverse (71103432762), we get a palindrome (97826862879).

The spelling of 26723430117 in words is "twenty-six billion, seven hundred twenty-three million, four hundred thirty thousand, one hundred seventeen".