155715516007207 has 16 divisors (see below), whose sum is σ = 167754436795008. Its totient is φ = 143685284624640.

The previous prime is 155715516007171. The next prime is 155715516007211. The reversal of 155715516007207 is 702700615517551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155715516007207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155715516007277) 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, 2412179643 + ... + 2412244195.

It is an arithmetic number, because the mean of its divisors is an integer number (10484652299688).

Almost surely, 2^{155715516007207} is an apocalyptic number.

155715516007207 is a deficient number, since it is larger than the sum of its proper divisors (12038920787801).

155715516007207 is a wasteful number, since it uses less digits than its factorization.

155715516007207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128970.

The product of its (nonzero) digits is 2572500, while the sum is 52.

The spelling of 155715516007207 in words is "one hundred fifty-five trillion, seven hundred fifteen billion, five hundred sixteen million, seven thousand, two hundred seven".