63261197460 has 72 divisors (see below), whose sum is σ = 192029259240. Its totient is φ = 16857612288.

The previous prime is 63261197443. The next prime is 63261197479. The reversal of 63261197460 is 6479116236.

63261197460 is a `hidden beast` number, since 632 + 6 + 1 + 1 + 9 + 7 + 4 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 378613764 + 62882583696 = 19458^2 + 250764^2 .

It is a super-2 number, since 2×63261197460² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128904 + ... + 378336.

It is an arithmetic number, because the mean of its divisors is an integer number (2667073045).

Almost surely, 2^63261197460 is an apocalyptic number.

63261197460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63261197460 is an abundant number, since it is smaller than the sum of its proper divisors (128768061780).

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

63261197460 is a wasteful number, since it uses less digits than its factorization.

63261197460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250857 (or 250852 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 63261197460 in words is "sixty-three billion, two hundred sixty-one million, one hundred ninety-seven thousand, four hundred sixty".