1320131257632 has 72 divisors (see below), whose sum is σ = 4095407206800. Its totient is φ = 400039774080.

The previous prime is 1320131257609. The next prime is 1320131257657. The reversal of 1320131257632 is 2367521310231.

1320131257632 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 1 + 3 + 12 + 5 + 7 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 208350882 + ... + 208357217.

It is an arithmetic number, because the mean of its divisors is an integer number (56880655650).

Almost surely, 2^{1320131257632} is an apocalyptic number.

1320131257632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320131257632 is an abundant number, since it is smaller than the sum of its proper divisors (2775275949168).

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

1320131257632 is a wasteful number, since it uses less digits than its factorization.

1320131257632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416708126 (or 416708115 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 1320131257632 its reverse (2367521310231), we get a palindrome (3687652567863).

The spelling of 1320131257632 in words is "one trillion, three hundred twenty billion, one hundred thirty-one million, two hundred fifty-seven thousand, six hundred thirty-two".