154312670721 has 16 divisors (see below), whose sum is σ = 225884449728. Its totient is φ = 92927140800.

The previous prime is 154312670651. The next prime is 154312670753. The reversal of 154312670721 is 127076213451.

It is not a de Polignac number, because 154312670721 - 2¹⁷ = 154312539649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154312670721.

It is not an unprimeable number, because it can be changed into a prime (154312670221) 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, 14886990 + ... + 14897351.

It is an arithmetic number, because the mean of its divisors is an integer number (14117778108).

Almost surely, 2^154312670721 is an apocalyptic number.

154312670721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

154312670721 is a deficient number, since it is larger than the sum of its proper divisors (71571779007).

154312670721 is a wasteful number, since it uses less digits than its factorization.

154312670721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29784512.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 154312670721 in words is "one hundred fifty-four billion, three hundred twelve million, six hundred seventy thousand, seven hundred twenty-one".