155545213022 has 4 divisors (see below), whose sum is σ = 233317819536. Its totient is φ = 77772606510.

The previous prime is 155545213001. The next prime is 155545213051. The reversal of 155545213022 is 220312545551.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38886303254 + ... + 38886303257.

It is an arithmetic number, because the mean of its divisors is an integer number (58329454884).

Almost surely, 2^155545213022 is an apocalyptic number.

155545213022 is a deficient number, since it is larger than the sum of its proper divisors (77772606514).

155545213022 is an equidigital number, since it uses as much as digits as its factorization.

155545213022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77772606513.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 155545213022 its reverse (220312545551), we get a palindrome (375857758573).

The spelling of 155545213022 in words is "one hundred fifty-five billion, five hundred forty-five million, two hundred thirteen thousand, twenty-two".