154970640729 has 6 divisors (see below), whose sum is σ = 223846481066. Its totient is φ = 103313760480.

The previous prime is 154970640719. The next prime is 154970640739. The reversal of 154970640729 is 927046079451.

154970640729 is a `hidden beast` number, since 1 + 549 + 70 + 6 + 4 + 0 + 7 + 29 = 666.

It is an interprime number because it is at equal distance from previous prime (154970640719) and next prime (154970640739).

It can be written as a sum of positive squares in only one way, i.e., 151784264025 + 3186376704 = 389595^2 + 56448^2 .

It is not a de Polignac number, because 154970640729 - 2⁹ = 154970640217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154970640719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8609480032 + ... + 8609480049.

Almost surely, 2^154970640729 is an apocalyptic number.

It is an amenable number.

154970640729 is a deficient number, since it is larger than the sum of its proper divisors (68875840337).

154970640729 is a wasteful number, since it uses less digits than its factorization.

154970640729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17218960087 (or 17218960084 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 154970640729 in words is "one hundred fifty-four billion, nine hundred seventy million, six hundred forty thousand, seven hundred twenty-nine".