997150997151 has 32 divisors (see below), whose sum is σ = 1555116460800. Its totient is φ = 629736988320.

The previous prime is 997150997137. The next prime is 997150997177. The reversal of 997150997151 is 151799051799.

997150997151 is a `hidden beast` number, since 9 + 9 + 7 + 1 + 509 + 9 + 71 + 51 = 666.

It is not a de Polignac number, because 997150997151 - 2¹⁷ = 997150866079 is a prime.

It is a super-2 number, since 2×997150997151² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997150997131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8654020 + ... + 8768486.

It is an arithmetic number, because the mean of its divisors is an integer number (48597389400).

Almost surely, 2^997150997151 is an apocalyptic number.

997150997151 is a deficient number, since it is larger than the sum of its proper divisors (557965463649).

997150997151 is a wasteful number, since it uses less digits than its factorization.

997150997151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131476 (or 131470 counting only the distinct ones).

The product of its (nonzero) digits is 8037225, while the sum is 63.

The spelling of 997150997151 in words is "nine hundred ninety-seven billion, one hundred fifty million, nine hundred ninety-seven thousand, one hundred fifty-one".