26012011958 has 4 divisors (see below), whose sum is σ = 39018017940. Its totient is φ = 13006005978.

The previous prime is 26012011951. The next prime is 26012011969. The reversal of 26012011958 is 85911021062.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×26012011958² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26012011951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6503002988 + ... + 6503002991.

It is an arithmetic number, because the mean of its divisors is an integer number (9754504485).

Almost surely, 2^26012011958 is an apocalyptic number.

26012011958 is a deficient number, since it is larger than the sum of its proper divisors (13006005982).

26012011958 is a wasteful number, since it uses less digits than its factorization.

26012011958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13006005981.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 26012011958 in words is "twenty-six billion, twelve million, eleven thousand, nine hundred fifty-eight".