26123205417 has 16 divisors (see below), whose sum is σ = 35620571328. Its totient is φ = 17024878080.

The previous prime is 26123205413. The next prime is 26123205461. The reversal of 26123205417 is 71450232162.

It is not a de Polignac number, because 26123205417 - 2² = 26123205413 is a prime.

It is a super-2 number, since 2×26123205417² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26123205413) 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, 503059 + ... + 552552.

It is an arithmetic number, because the mean of its divisors is an integer number (2226285708).

Almost surely, 2^26123205417 is an apocalyptic number.

It is an amenable number.

26123205417 is a deficient number, since it is larger than the sum of its proper divisors (9497365911).

26123205417 is a wasteful number, since it uses less digits than its factorization.

26123205417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055800.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 26123205417 its reverse (71450232162), we get a palindrome (97573437579).

It can be divided in two parts, 26123 and 205417, that added together give a triangular number (231540 = T₆₈₀).

The spelling of 26123205417 in words is "twenty-six billion, one hundred twenty-three million, two hundred five thousand, four hundred seventeen".