155002204442 has 4 divisors (see below), whose sum is σ = 232503306666. Its totient is φ = 77501102220.

The previous prime is 155002204439. The next prime is 155002204481. The reversal of 155002204442 is 244402200551.

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

It can be written as a sum of positive squares in only one way, i.e., 108267979681 + 46734224761 = 329041^2 + 216181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38750551109 + ... + 38750551112.

Almost surely, 2^155002204442 is an apocalyptic number.

155002204442 is a deficient number, since it is larger than the sum of its proper divisors (77501102224).

155002204442 is an equidigital number, since it uses as much as digits as its factorization.

155002204442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77501102223.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 155002204442 its reverse (244402200551), we get a palindrome (399404404993).

The spelling of 155002204442 in words is "one hundred fifty-five billion, two million, two hundred four thousand, four hundred forty-two".