154946649451 has 16 divisors (see below), whose sum is σ = 170202240000. Its totient is φ = 139886373600.

The previous prime is 154946649449. The next prime is 154946649463.

154946649451 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 154946649451 - 2¹ = 154946649449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154946640451) 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, 14894950 + ... + 14905348.

It is an arithmetic number, because the mean of its divisors is an integer number (10637640000).

Almost surely, 2^154946649451 is an apocalyptic number.

154946649451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154946649451 is a deficient number, since it is larger than the sum of its proper divisors (15255590549).

154946649451 is a wasteful number, since it uses less digits than its factorization.

154946649451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19650.

The product of its digits is 18662400, while the sum is 58.

The spelling of 154946649451 in words is "one hundred fifty-four billion, nine hundred forty-six million, six hundred forty-nine thousand, four hundred fifty-one".