63591239412 has 36 divisors (see below), whose sum is σ = 162550648260. Its totient is φ = 20958909312.

The previous prime is 63591239407. The next prime is 63591239423. The reversal of 63591239412 is 21493219536.

63591239412 is a `hidden beast` number, since 63 + 59 + 123 + 9 + 412 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24123059856 + 39468179556 = 155316^2 + 198666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×63591239412³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9920523 + ... + 9926930.

It is an arithmetic number, because the mean of its divisors is an integer number (4515295785).

Almost surely, 2^63591239412 is an apocalyptic number.

It is an amenable number.

63591239412 is an abundant number, since it is smaller than the sum of its proper divisors (98959408848).

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

63591239412 is a wasteful number, since it uses less digits than its factorization.

63591239412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19847552 (or 19847547 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The spelling of 63591239412 in words is "sixty-three billion, five hundred ninety-one million, two hundred thirty-nine thousand, four hundred twelve".