16548287640 has 32 divisors (see below), whose sum is σ = 49644863280. Its totient is φ = 4412876672.

The previous prime is 16548287621. The next prime is 16548287647. The reversal of 16548287640 is 4678284561.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16548287647) 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, 68951079 + ... + 68951318.

Almost surely, 2^16548287640 is an apocalyptic number.

16548287640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16548287640 is an abundant number, since it is smaller than the sum of its proper divisors (33096575640).

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

16548287640 is a wasteful number, since it uses less digits than its factorization.

16548287640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137902411 (or 137902407 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 16548287640 in words is "sixteen billion, five hundred forty-eight million, two hundred eighty-seven thousand, six hundred forty".