997612518412 has 6 divisors (see below), whose sum is σ = 1745821907228. Its totient is φ = 498806259204.

The previous prime is 997612518403. The next prime is 997612518443. The reversal of 997612518412 is 214815216799.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124701564798 + ... + 124701564805.

Almost surely, 2^997612518412 is an apocalyptic number.

It is an amenable number.

997612518412 is a deficient number, since it is larger than the sum of its proper divisors (748209388816).

997612518412 is a wasteful number, since it uses less digits than its factorization.

997612518412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249403129607 (or 249403129605 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The spelling of 997612518412 in words is "nine hundred ninety-seven billion, six hundred twelve million, five hundred eighteen thousand, four hundred twelve".