155486684551 has 4 divisors (see below), whose sum is σ = 169621837704. Its totient is φ = 141351531400.

The previous prime is 155486684491. The next prime is 155486684569.

155486684551 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155486684551 is a prime.

It is a super-2 number, since 2×155486684551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155486684051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7067576560 + ... + 7067576581.

It is an arithmetic number, because the mean of its divisors is an integer number (42405459426).

Almost surely, 2^155486684551 is an apocalyptic number.

155486684551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155486684551 is a deficient number, since it is larger than the sum of its proper divisors (14135153153).

155486684551 is a wasteful number, since it uses less digits than its factorization.

155486684551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135153152.

The product of its digits is 23040000, while the sum is 58.

The spelling of 155486684551 in words is "one hundred fifty-five billion, four hundred eighty-six million, six hundred eighty-four thousand, five hundred fifty-one".