13640328890 has 8 divisors (see below), whose sum is σ = 24552592020. Its totient is φ = 5456131552.

The previous prime is 13640328887. The next prime is 13640328929. The reversal of 13640328890 is 9882304631.

It can be written as a sum of positive squares in 2 ways, for example, as 13412650969 + 227677921 = 115813^2 + 15089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682016435 + ... + 682016454.

Almost surely, 2^13640328890 is an apocalyptic number.

13640328890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13640328890 is a deficient number, since it is larger than the sum of its proper divisors (10912263130).

13640328890 is a wasteful number, since it uses less digits than its factorization.

13640328890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364032896.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 13640328890 in words is "thirteen billion, six hundred forty million, three hundred twenty-eight thousand, eight hundred ninety".