155230763212 has 24 divisors (see below), whose sum is σ = 317067093504. Its totient is φ = 65111991312.

The previous prime is 155230763153. The next prime is 155230763213. The reversal of 155230763212 is 212367032551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155230763213) by changing a digit.

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, 58976938 + ... + 58979569.

It is an arithmetic number, because the mean of its divisors is an integer number (13211128896).

Almost surely, 2^155230763212 is an apocalyptic number.

It is an amenable number.

155230763212 is an abundant number, since it is smaller than the sum of its proper divisors (161836330292).

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

155230763212 is a wasteful number, since it uses less digits than its factorization.

155230763212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117956565 (or 117956563 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

Adding to 155230763212 its reverse (212367032551), we get a palindrome (367597795763).

The spelling of 155230763212 in words is "one hundred fifty-five billion, two hundred thirty million, seven hundred sixty-three thousand, two hundred twelve".