155489958238216 has 32 divisors (see below), whose sum is σ = 333217070426880. Its totient is φ = 66633692976000.

The previous prime is 155489958238187. The next prime is 155489958238289. The reversal of 155489958238216 is 612832859984551.

It is a super-2 number, since 2×155489958238216² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100486885 + ... + 102022516.

It is an arithmetic number, because the mean of its divisors is an integer number (10413033450840).

Almost surely, 2^{155489958238216} is an apocalyptic number.

It is an amenable number.

155489958238216 is an abundant number, since it is smaller than the sum of its proper divisors (177727112188664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155489958238216 is a wasteful number, since it uses less digits than its factorization.

155489958238216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202523125 (or 202523121 counting only the distinct ones).

The product of its digits is 1492992000, while the sum is 76.

The spelling of 155489958238216 in words is "one hundred fifty-five trillion, four hundred eighty-nine billion, nine hundred fifty-eight million, two hundred thirty-eight thousand, two hundred sixteen".