63126415620 has 72 divisors (see below), whose sum is σ = 191720594520. Its totient is φ = 16812864000.

The previous prime is 63126415609. The next prime is 63126415643. The reversal of 63126415620 is 2651462136.

63126415620 is a `hidden beast` number, since 6 + 3 + 1 + 2 + 641 + 5 + 6 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23912911044 + 39213504576 = 154638^2 + 198024^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71131 + ... + 362370.

It is an arithmetic number, because the mean of its divisors is an integer number (2662786035).

Almost surely, 2^63126415620 is an apocalyptic number.

63126415620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63126415620 is an abundant number, since it is smaller than the sum of its proper divisors (128594178900).

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

63126415620 is a wasteful number, since it uses less digits than its factorization.

63126415620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434325 (or 434320 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 63126415620 its reverse (2651462136), we get a palindrome (65777877756).

The spelling of 63126415620 in words is "sixty-three billion, one hundred twenty-six million, four hundred fifteen thousand, six hundred twenty".