206472372520 has 64 divisors (see below), whose sum is σ = 469497772800. Its totient is φ = 81712158720.

The previous prime is 206472372517. The next prime is 206472372553. The reversal of 206472372520 is 25273274602.

It is a super-2 number, since 2×206472372520² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031021 + ... + 17043139.

It is an arithmetic number, because the mean of its divisors is an integer number (7335902700).

Almost surely, 2^206472372520 is an apocalyptic number.

206472372520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206472372520 is an abundant number, since it is smaller than the sum of its proper divisors (263025400280).

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

206472372520 is a wasteful number, since it uses less digits than its factorization.

206472372520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16618 (or 16614 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 206472372520 in words is "two hundred six billion, four hundred seventy-two million, three hundred seventy-two thousand, five hundred twenty".