161253270034 has 8 divisors (see below), whose sum is σ = 241889409468. Its totient is φ = 80623466880.

The previous prime is 161253269953. The next prime is 161253270097. The reversal of 161253270034 is 430072352161.

It can be written as a sum of positive squares in 2 ways, for example, as 156818376009 + 4434894025 = 396003^2 + 66595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161253270034² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519927 + ... + 1622554.

Almost surely, 2^161253270034 is an apocalyptic number.

161253270034 is a deficient number, since it is larger than the sum of its proper divisors (80636139434).

161253270034 is a wasteful number, since it uses less digits than its factorization.

161253270034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168140.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 161253270034 in words is "one hundred sixty-one billion, two hundred fifty-three million, two hundred seventy thousand, thirty-four".