161267126512 has 40 divisors (see below), whose sum is σ = 316934683632. Its totient is φ = 79484160000.

The previous prime is 161267126473. The next prime is 161267126551. The reversal of 161267126512 is 215621762161.

It is an interprime number because it is at equal distance from previous prime (161267126473) and next prime (161267126551).

It is a super-2 number, since 2×161267126512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182562 + ... + 596542.

Almost surely, 2^161267126512 is an apocalyptic number.

It is an amenable number.

161267126512 is a deficient number, since it is larger than the sum of its proper divisors (155667557120).

161267126512 is a wasteful number, since it uses less digits than its factorization.

161267126512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414337 (or 414331 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

Adding to 161267126512 its reverse (215621762161), we get a palindrome (376888888673).

The spelling of 161267126512 in words is "one hundred sixty-one billion, two hundred sixty-seven million, one hundred twenty-six thousand, five hundred twelve".