16520262040 has 32 divisors (see below), whose sum is σ = 39357096480. Its totient is φ = 6219392512.

The previous prime is 16520262029. The next prime is 16520262047. The reversal of 16520262040 is 4026202561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16520262047) 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, 12146572 + ... + 12147931.

It is an arithmetic number, because the mean of its divisors is an integer number (1229909265).

Almost surely, 2^16520262040 is an apocalyptic number.

16520262040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16520262040 is an abundant number, since it is smaller than the sum of its proper divisors (22836834440).

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

16520262040 is a wasteful number, since it uses less digits than its factorization.

16520262040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24294531 (or 24294527 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 16520262040 in words is "sixteen billion, five hundred twenty million, two hundred sixty-two thousand, forty".