155015640001 has 2 divisors, whose sum is σ = 155015640002. Its totient is φ = 155015640000.

The previous prime is 155015639981. The next prime is 155015640007. The reversal of 155015640001 is 100046510551.

It is a happy number.

155015640001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155015438400 + 201601 = 393720^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 155015640001 - 2⁷ = 155015639873 is a prime.

It is not a weakly prime, because it can be changed into another prime (155015640007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77507820000 + 77507820001.

It is an arithmetic number, because the mean of its divisors is an integer number (77507820001).

Almost surely, 2^155015640001 is an apocalyptic number.

It is an amenable number.

155015640001 is a deficient number, since it is larger than the sum of its proper divisors (1).

155015640001 is an equidigital number, since it uses as much as digits as its factorization.

155015640001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 155015640001 in words is "one hundred fifty-five billion, fifteen million, six hundred forty thousand, one".