101545140161 has 4 divisors (see below), whose sum is σ = 101582571972. Its totient is φ = 101507708352.

The previous prime is 101545140131. The next prime is 101545140209. The reversal of 101545140161 is 161041545101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63029115136 + 38516025025 = 251056^2 + 196255^2 .

It is a cyclic number.

It is not a de Polignac number, because 101545140161 - 2¹⁴ = 101545123777 is a prime.

It is a super-2 number, since 2×101545140161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101545140131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18711836 + ... + 18717261.

It is an arithmetic number, because the mean of its divisors is an integer number (25395642993).

Almost surely, 2^101545140161 is an apocalyptic number.

It is an amenable number.

101545140161 is a deficient number, since it is larger than the sum of its proper divisors (37431811).

101545140161 is an equidigital number, since it uses as much as digits as its factorization.

101545140161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37431810.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 101545140161 its reverse (161041545101), we get a palindrome (262586685262).

The spelling of 101545140161 in words is "one hundred one billion, five hundred forty-five million, one hundred forty thousand, one hundred sixty-one".