16264555540 has 24 divisors (see below), whose sum is σ = 34304727240. Its totient is φ = 6477410688.

The previous prime is 16264555519. The next prime is 16264555543. The reversal of 16264555540 is 4555546261.

It can be written as a sum of positive squares in 4 ways, for example, as 1803531024 + 14461024516 = 42468^2 + 120254^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16264555543) 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, 1771027 + ... + 1780186.

It is an arithmetic number, because the mean of its divisors is an integer number (1429363635).

Almost surely, 2^16264555540 is an apocalyptic number.

16264555540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16264555540 is an abundant number, since it is smaller than the sum of its proper divisors (18040171700).

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

16264555540 is a wasteful number, since it uses less digits than its factorization.

16264555540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551451 (or 3551449 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 16264555540 in words is "sixteen billion, two hundred sixty-four million, five hundred fifty-five thousand, five hundred forty".