26316078946 has 4 divisors (see below), whose sum is σ = 39474118422. Its totient is φ = 13158039472.

The previous prime is 26316078911. The next prime is 26316078947. The reversal of 26316078946 is 64987061362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64987061362 = 2 ⋅32493530681.

It can be written as a sum of positive squares in only one way, i.e., 14992778025 + 11323300921 = 122445^2 + 106411^2 .

It is a super-2 number, since 2×26316078946² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26316078893 and 26316078902.

It is not an unprimeable number, because it can be changed into a prime (26316078947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6579019735 + ... + 6579019738.

Almost surely, 2^26316078946 is an apocalyptic number.

26316078946 is a deficient number, since it is larger than the sum of its proper divisors (13158039476).

26316078946 is a wasteful number, since it uses less digits than its factorization.

26316078946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13158039475.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 26316078946 in words is "twenty-six billion, three hundred sixteen million, seventy-eight thousand, nine hundred forty-six".