154681183641601 has 4 divisors (see below), whose sum is σ = 154681208524804. Its totient is φ = 154681158758400.

The previous prime is 154681183641581. The next prime is 154681183641623. The reversal of 154681183641601 is 106146381186451.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 115887270359025 + 38793913282576 = 10765095^2 + 6228476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154681183641601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154681183641631) 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, 5718241 + ... + 18494881.

It is an arithmetic number, because the mean of its divisors is an integer number (38670302131201).

Almost surely, 2^{154681183641601} is an apocalyptic number.

It is an amenable number.

154681183641601 is a deficient number, since it is larger than the sum of its proper divisors (24883203).

154681183641601 is a wasteful number, since it uses less digits than its factorization.

154681183641601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24883202.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 154681183641601 in words is "one hundred fifty-four trillion, six hundred eighty-one billion, one hundred eighty-three million, six hundred forty-one thousand, six hundred one".