26587920442 has 4 divisors (see below), whose sum is σ = 39881880666. Its totient is φ = 13293960220.

The previous prime is 26587920439. The next prime is 26587920473. The reversal of 26587920442 is 24402978562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24402978562 = 2 ⋅12201489281.

It can be written as a sum of positive squares in only one way, i.e., 19751772681 + 6836147761 = 140541^2 + 82681^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646980109 + ... + 6646980112.

Almost surely, 2^26587920442 is an apocalyptic number.

26587920442 is a deficient number, since it is larger than the sum of its proper divisors (13293960224).

26587920442 is a wasteful number, since it uses less digits than its factorization.

26587920442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13293960223.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 26587920442 in words is "twenty-six billion, five hundred eighty-seven million, nine hundred twenty thousand, four hundred forty-two".