155205756051 has 4 divisors (see below), whose sum is σ = 206941008072. Its totient is φ = 103470504032.

The previous prime is 155205755993. The next prime is 155205756059. The reversal of 155205756051 is 150657502551.

155205756051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155205756051 - 2⁶ = 155205755987 is a prime.

It is a super-2 number, since 2×155205756051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155205755994 and 155205756012.

It is not an unprimeable number, because it can be changed into a prime (155205756059) 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 in 3 ways as a sum of consecutive naturals, for example, 25867626006 + ... + 25867626011.

It is an arithmetic number, because the mean of its divisors is an integer number (51735252018).

Almost surely, 2^155205756051 is an apocalyptic number.

155205756051 is a deficient number, since it is larger than the sum of its proper divisors (51735252021).

155205756051 is an equidigital number, since it uses as much as digits as its factorization.

155205756051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51735252020.

The product of its (nonzero) digits is 262500, while the sum is 42.

The spelling of 155205756051 in words is "one hundred fifty-five billion, two hundred five million, seven hundred fifty-six thousand, fifty-one".