126381601332 has 72 divisors (see below), whose sum is σ = 384318334400. Its totient is φ = 34208552448.

The previous prime is 126381601303. The next prime is 126381601369. The reversal of 126381601332 is 233106183621.

126381601332 is a `hidden beast` number, since 1 + 2 + 638 + 1 + 6 + 0 + 13 + 3 + 2 = 666.

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

It is a congruent number.

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, 13192957 + ... + 13202532.

Almost surely, 2^126381601332 is an apocalyptic number.

126381601332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126381601332 is an abundant number, since it is smaller than the sum of its proper divisors (257936733068).

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

126381601332 is a wasteful number, since it uses less digits than its factorization.

126381601332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26395525 (or 26395520 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 126381601332 its reverse (233106183621), we get a palindrome (359487784953).

The spelling of 126381601332 in words is "one hundred twenty-six billion, three hundred eighty-one million, six hundred one thousand, three hundred thirty-two".