155560655551 has 8 divisors (see below), whose sum is σ = 177786511904. Its totient is φ = 133335525600.

The previous prime is 155560655513. The next prime is 155560655599. The reversal of 155560655551 is 155556065551.

155560655551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155560655551 - 2¹⁵ = 155560622783 is a prime.

It is a super-2 number, since 2×155560655551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155560655495 and 155560655504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155560625551) 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 7 ways as a sum of consecutive naturals, for example, 402601 + ... + 687901.

It is an arithmetic number, because the mean of its divisors is an integer number (22223313988).

Almost surely, 2^155560655551 is an apocalyptic number.

155560655551 is a deficient number, since it is larger than the sum of its proper divisors (22225856353).

155560655551 is an equidigital number, since it uses as much as digits as its factorization.

155560655551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363201.

The product of its (nonzero) digits is 2812500, while the sum is 49.

The spelling of 155560655551 in words is "one hundred fifty-five billion, five hundred sixty million, six hundred fifty-five thousand, five hundred fifty-one".