155281086686 has 24 divisors (see below), whose sum is σ = 256555978560. Its totient is φ = 70434906080.

The previous prime is 155281086677. The next prime is 155281086713. The reversal of 155281086686 is 686680182551.

It is a happy number.

It is a super-2 number, since 2×155281086686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 553871 + ... + 785706.

It is an arithmetic number, because the mean of its divisors is an integer number (10689832440).

Almost surely, 2^155281086686 is an apocalyptic number.

155281086686 is a deficient number, since it is larger than the sum of its proper divisors (101274891874).

155281086686 is a wasteful number, since it uses less digits than its factorization.

155281086686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340080 (or 1340069 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 56.

The spelling of 155281086686 in words is "one hundred fifty-five billion, two hundred eighty-one million, eighty-six thousand, six hundred eighty-six".