26661011492 has 6 divisors (see below), whose sum is σ = 46656770118. Its totient is φ = 13330505744.

The previous prime is 26661011491. The next prime is 26661011557. The reversal of 26661011492 is 29411016662.

It can be written as a sum of positive squares in only one way, i.e., 23735716096 + 2925295396 = 154064^2 + 54086^2 .

It is not an unprimeable number, because it can be changed into a prime (26661011491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332626433 + ... + 3332626440.

It is an arithmetic number, because the mean of its divisors is an integer number (7776128353).

Almost surely, 2^26661011492 is an apocalyptic number.

It is an amenable number.

26661011492 is a deficient number, since it is larger than the sum of its proper divisors (19995758626).

26661011492 is a wasteful number, since it uses less digits than its factorization.

26661011492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665252877 (or 6665252875 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 26661011492 in words is "twenty-six billion, six hundred sixty-one million, eleven thousand, four hundred ninety-two".