26157312724 has 6 divisors (see below), whose sum is σ = 45775297274. Its totient is φ = 13078656360.

The previous prime is 26157312721. The next prime is 26157312791. The reversal of 26157312724 is 42721375162.

It can be written as a sum of positive squares in only one way, i.e., 26157239824 + 72900 = 161732^2 + 270^2 .

It is a super-2 number, since 2×26157312724² (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 (26157312721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269664087 + ... + 3269664094.

Almost surely, 2^26157312724 is an apocalyptic number.

It is an amenable number.

26157312724 is a deficient number, since it is larger than the sum of its proper divisors (19617984550).

26157312724 is a wasteful number, since it uses less digits than its factorization.

26157312724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539328185 (or 6539328183 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

Adding to 26157312724 its reverse (42721375162), we get a palindrome (68878687886).

The spelling of 26157312724 in words is "twenty-six billion, one hundred fifty-seven million, three hundred twelve thousand, seven hundred twenty-four".