26439743972 has 6 divisors (see below), whose sum is σ = 46269551958. Its totient is φ = 13219871984.

The previous prime is 26439743951. The next prime is 26439743983. The reversal of 26439743972 is 27934793462.

It can be written as a sum of positive squares in only one way, i.e., 23428588096 + 3011155876 = 153064^2 + 54874^2 .

It is a super-2 number, since 2×26439743972² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304967993 + ... + 3304968000.

It is an arithmetic number, because the mean of its divisors is an integer number (7711591993).

Almost surely, 2^26439743972 is an apocalyptic number.

It is an amenable number.

26439743972 is a deficient number, since it is larger than the sum of its proper divisors (19829807986).

26439743972 is a wasteful number, since it uses less digits than its factorization.

26439743972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609935997 (or 6609935995 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 56.

The spelling of 26439743972 in words is "twenty-six billion, four hundred thirty-nine million, seven hundred forty-three thousand, nine hundred seventy-two".