154136166681 has 32 divisors (see below), whose sum is σ = 235262592000. Its totient is φ = 87932295360.

The previous prime is 154136166671. The next prime is 154136166689. The reversal of 154136166681 is 186661631451.

It is a happy number.

It is not a de Polignac number, because 154136166681 - 2¹³ = 154136158489 is a prime.

It is a super-2 number, since 2×154136166681² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 154136166681.

It is not an unprimeable number, because it can be changed into a prime (154136166689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60467995 + ... + 60470543.

It is an arithmetic number, because the mean of its divisors is an integer number (7351956000).

Almost surely, 2^154136166681 is an apocalyptic number.

It is an amenable number.

154136166681 is a deficient number, since it is larger than the sum of its proper divisors (81126425319).

154136166681 is a wasteful number, since it uses less digits than its factorization.

154136166681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189.

The product of its digits is 622080, while the sum is 48.

The spelling of 154136166681 in words is "one hundred fifty-four billion, one hundred thirty-six million, one hundred sixty-six thousand, six hundred eighty-one".