997560132642 has 24 divisors (see below), whose sum is σ = 2219795972316. Its totient is φ = 323533015776.

The previous prime is 997560132619. The next prime is 997560132643. The reversal of 997560132642 is 246231065799.

997560132642 is a `hidden beast` number, since 9 + 9 + 7 + 5 + 601 + 3 + 26 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 755298308241 + 242261824401 = 869079^2 + 492201^2 .

It is not an unprimeable number, because it can be changed into a prime (997560132643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 748918353 + ... + 748919684.

Almost surely, 2^997560132642 is an apocalyptic number.

997560132642 is an abundant number, since it is smaller than the sum of its proper divisors (1222235839674).

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

997560132642 is a wasteful number, since it uses less digits than its factorization.

997560132642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497838082 (or 1497838079 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 997560132642 in words is "nine hundred ninety-seven billion, five hundred sixty million, one hundred thirty-two thousand, six hundred forty-two".