16501787760 has 160 divisors (see below), whose sum is σ = 52237156608. Its totient is φ = 4308398080.

The previous prime is 16501787719. The next prime is 16501787761. The reversal of 16501787760 is 6778710561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501787761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247295 + ... + 2254625.

Almost surely, 2^16501787760 is an apocalyptic number.

16501787760 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 16501787760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26118578304).

16501787760 is an abundant number, since it is smaller than the sum of its proper divisors (35735368848).

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

16501787760 is a wasteful number, since it uses less digits than its factorization.

16501787760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543 (or 7537 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 48.

The spelling of 16501787760 in words is "sixteen billion, five hundred one million, seven hundred eighty-seven thousand, seven hundred sixty".