26172344652 has 24 divisors (see below), whose sum is σ = 61185585216. Its totient is φ = 8707431888.

The previous prime is 26172344641. The next prime is 26172344663. The reversal of 26172344652 is 25644327162.

It is an interprime number because it is at equal distance from previous prime (26172344641) and next prime (26172344663).

It is a super-2 number, since 2×26172344652² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078838 + ... + 2091389.

It is an arithmetic number, because the mean of its divisors is an integer number (2549399384).

Almost surely, 2^26172344652 is an apocalyptic number.

It is an amenable number.

26172344652 is an abundant number, since it is smaller than the sum of its proper divisors (35013240564).

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

26172344652 is a wasteful number, since it uses less digits than its factorization.

26172344652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170757 (or 4170755 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The spelling of 26172344652 in words is "twenty-six billion, one hundred seventy-two million, three hundred forty-four thousand, six hundred fifty-two".