154408820435081 has 16 divisors (see below), whose sum is σ = 162664841908800. Its totient is φ = 146165729112000.

The previous prime is 154408820435071. The next prime is 154408820435087. The reversal of 154408820435081 is 180534028804451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154408820435081 is a prime.

It is a super-2 number, since 2×154408820435081² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154408820435087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438864055 + ... + 1438971363.

It is an arithmetic number, because the mean of its divisors is an integer number (10166552619300).

Almost surely, 2^{154408820435081} is an apocalyptic number.

It is an amenable number.

154408820435081 is a deficient number, since it is larger than the sum of its proper divisors (8256021473719).

154408820435081 is a wasteful number, since it uses less digits than its factorization.

154408820435081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166840.

The product of its (nonzero) digits is 4915200, while the sum is 53.

The spelling of 154408820435081 in words is "one hundred fifty-four trillion, four hundred eight billion, eight hundred twenty million, four hundred thirty-five thousand, eighty-one".