26969034978 has 12 divisors (see below), whose sum is σ = 58432909158. Its totient is φ = 8989678320.

The previous prime is 26969034971. The next prime is 26969035007. The reversal of 26969034978 is 87943096962.

It can be written as a sum of positive squares in only one way, i.e., 23437466649 + 3531568329 = 153093^2 + 59427^2 .

It is not an unprimeable number, because it can be changed into a prime (26969034971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749139843 + ... + 749139878.

Almost surely, 2^26969034978 is an apocalyptic number.

26969034978 is an abundant number, since it is smaller than the sum of its proper divisors (31463874180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26969034978 is a wasteful number, since it uses less digits than its factorization.

26969034978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498279729 (or 1498279726 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 26969034978 in words is "twenty-six billion, nine hundred sixty-nine million, thirty-four thousand, nine hundred seventy-eight".