155123210645132 has 24 divisors (see below), whose sum is σ = 275160128646480. Its totient is φ = 76513139277120.

The previous prime is 155123210645113. The next prime is 155123210645149. The reversal of 155123210645132 is 231546012321551.

It is a self number, because there is not a number n which added to its sum of digits gives 155123210645132.

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, 888443219 + ... + 888617802.

It is an arithmetic number, because the mean of its divisors is an integer number (11465005360270).

Almost surely, 2^{155123210645132} is an apocalyptic number.

It is an amenable number.

155123210645132 is a deficient number, since it is larger than the sum of its proper divisors (120036918001348).

155123210645132 is a wasteful number, since it uses less digits than its factorization.

155123210645132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777061321 (or 1777061319 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 155123210645132 its reverse (231546012321551), we get a palindrome (386669222966683).

The spelling of 155123210645132 in words is "one hundred fifty-five trillion, one hundred twenty-three billion, two hundred ten million, six hundred forty-five thousand, one hundred thirty-two".