163160252761 has 9 divisors (see below), whose sum is σ = 179346318879. Its totient is φ = 148323463200.

The previous prime is 163160252743. The next prime is 163160252771. The reversal of 163160252761 is 167252061361.

The square root of 163160252761 is 403931.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8886361 + 163151366400 = 2981^2 + 403920^2 .

It is not a de Polignac number, because 163160252761 - 2¹¹ = 163160250713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163160252741) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4424881 + ... + 4461601.

Almost surely, 2^163160252761 is an apocalyptic number.

163160252761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

163160252761 is the 403931-st square number.

163160252761 is the 201966-th centered octagonal number.

It is an amenable number.

163160252761 is a deficient number, since it is larger than the sum of its proper divisors (16186066118).

163160252761 is an frugal number, since it uses more digits than its factorization.

163160252761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73464 (or 36732 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 163160252761 in words is "one hundred sixty-three billion, one hundred sixty million, two hundred fifty-two thousand, seven hundred sixty-one".