201447557240 has 64 divisors (see below), whose sum is σ = 454764641760. Its totient is φ = 80311288320.

The previous prime is 201447557221. The next prime is 201447557291. The reversal of 201447557240 is 42755744102.

It is a super-2 number, since 2×201447557240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 30239510 + ... + 30246170.

Almost surely, 2^201447557240 is an apocalyptic number.

201447557240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201447557240 is an abundant number, since it is smaller than the sum of its proper divisors (253317084520).

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

201447557240 is a wasteful number, since it uses less digits than its factorization.

201447557240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072 (or 9068 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 41.

The spelling of 201447557240 in words is "two hundred one billion, four hundred forty-seven million, five hundred fifty-seven thousand, two hundred forty".