155220986346 has 16 divisors (see below), whose sum is σ = 310602597024. Its totient is φ = 51713558064.

The previous prime is 155220986309. The next prime is 155220986363. The reversal of 155220986346 is 643689022551.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680116 + ... + 6703311.

It is an arithmetic number, because the mean of its divisors is an integer number (19412662314).

Almost surely, 2^155220986346 is an apocalyptic number.

155220986346 is an abundant number, since it is smaller than the sum of its proper divisors (155381610678).

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

155220986346 is a wasteful number, since it uses less digits than its factorization.

155220986346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13385365.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 155220986346 in words is "one hundred fifty-five billion, two hundred twenty million, nine hundred eighty-six thousand, three hundred forty-six".