155022254434 has 4 divisors (see below), whose sum is σ = 232533381654. Its totient is φ = 77511127216.

The previous prime is 155022254423. The next prime is 155022254473. The reversal of 155022254434 is 434452220551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434452220551 = 1367 ⋅317814353.

It can be written as a sum of positive squares in only one way, i.e., 135936003025 + 19086251409 = 368695^2 + 138153^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155022254393 and 155022254402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38755563607 + ... + 38755563610.

Almost surely, 2^155022254434 is an apocalyptic number.

155022254434 is a deficient number, since it is larger than the sum of its proper divisors (77511127220).

155022254434 is an equidigital number, since it uses as much as digits as its factorization.

155022254434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77511127219.

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 155022254434 its reverse (434452220551), we get a palindrome (589474474985).

The spelling of 155022254434 in words is "one hundred fifty-five billion, twenty-two million, two hundred fifty-four thousand, four hundred thirty-four".