26321403660 has 24 divisors (see below), whose sum is σ = 73699930416. Its totient is φ = 7019040960.

The previous prime is 26321403653. The next prime is 26321403677. The reversal of 26321403660 is 6630412362.

It is a super-2 number, since 2×26321403660² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219344971 + ... + 219345090.

It is an arithmetic number, because the mean of its divisors is an integer number (3070830434).

Almost surely, 2^26321403660 is an apocalyptic number.

26321403660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26321403660 is an abundant number, since it is smaller than the sum of its proper divisors (47378526756).

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

26321403660 is a wasteful number, since it uses less digits than its factorization.

26321403660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438690073 (or 438690071 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 26321403660 in words is "twenty-six billion, three hundred twenty-one million, four hundred three thousand, six hundred sixty".