155281086685 has 16 divisors (see below), whose sum is σ = 197626458240. Its totient is φ = 116875851840.

The previous prime is 155281086677. The next prime is 155281086713. The reversal of 155281086685 is 586680182551.

It is not a de Polignac number, because 155281086685 - 2³ = 155281086677 is a prime.

It is a super-2 number, since 2×155281086685² (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 15 ways as a sum of consecutive naturals, for example, 11060775 + ... + 11074804.

It is an arithmetic number, because the mean of its divisors is an integer number (12351653640).

Almost surely, 2^155281086685 is an apocalyptic number.

It is an amenable number.

155281086685 is a deficient number, since it is larger than the sum of its proper divisors (42345371555).

155281086685 is a wasteful number, since it uses less digits than its factorization.

155281086685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22135668.

The product of its (nonzero) digits is 4608000, while the sum is 55.

The spelling of 155281086685 in words is "one hundred fifty-five billion, two hundred eighty-one million, eighty-six thousand, six hundred eighty-five".