15341664640 has 64 divisors (see below), whose sum is σ = 36787479120. Its totient is φ = 6118041600.

The previous prime is 15341664629. The next prime is 15341664641. The reversal of 15341664640 is 4646614351.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 15341664593 and 15341664602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15341664641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175630 + ... + 248050.

Almost surely, 2^15341664640 is an apocalyptic number.

15341664640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15341664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18393739560).

15341664640 is an abundant number, since it is smaller than the sum of its proper divisors (21445814480).

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

15341664640 is an equidigital number, since it uses as much as digits as its factorization.

15341664640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72771 (or 72759 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 15341664640 in words is "fifteen billion, three hundred forty-one million, six hundred sixty-four thousand, six hundred forty".