207047987481 has 16 divisors (see below), whose sum is σ = 290605160000. Its totient is φ = 130761978048.

The previous prime is 207047987459. The next prime is 207047987491. The reversal of 207047987481 is 184789740702.

It is not a de Polignac number, because 207047987481 - 2¹⁷ = 207047856409 is a prime.

It is a super-2 number, since 2×207047987481² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207047987411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1811235 + ... + 1922151.

It is an arithmetic number, because the mean of its divisors is an integer number (18162822500).

Almost surely, 2^207047987481 is an apocalyptic number.

It is an amenable number.

207047987481 is a deficient number, since it is larger than the sum of its proper divisors (83557172519).

207047987481 is a wasteful number, since it uses less digits than its factorization.

207047987481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143688.

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 207047987481 in words is "two hundred seven billion, forty-seven million, nine hundred eighty-seven thousand, four hundred eighty-one".