900275640161 has 4 divisors (see below), whose sum is σ = 907147973424. Its totient is φ = 893403306900.

The previous prime is 900275640107. The next prime is 900275640167. The reversal of 900275640161 is 161046572009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161046572009 = 15427 ⋅10439267.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900275640161 is a prime.

It is a super-2 number, since 2×900275640161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900275640167) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3436166435 + ... + 3436166696.

It is an arithmetic number, because the mean of its divisors is an integer number (226786993356).

Almost surely, 2^900275640161 is an apocalyptic number.

It is an amenable number.

900275640161 is a deficient number, since it is larger than the sum of its proper divisors (6872333263).

900275640161 is a wasteful number, since it uses less digits than its factorization.

900275640161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872333262.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 900275640161 in words is "nine hundred billion, two hundred seventy-five million, six hundred forty thousand, one hundred sixty-one".