155443042450 has 24 divisors (see below), whose sum is σ = 301694672448. Its totient is φ = 59473859280.

The previous prime is 155443042373. The next prime is 155443042451. The reversal of 155443042450 is 54240344551.

It is a super-2 number, since 2×155443042450² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155443042451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67582782 + ... + 67585081.

It is an arithmetic number, because the mean of its divisors is an integer number (12570611352).

Almost surely, 2^155443042450 is an apocalyptic number.

155443042450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155443042450 is a deficient number, since it is larger than the sum of its proper divisors (146251629998).

155443042450 is a wasteful number, since it uses less digits than its factorization.

155443042450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135167898 (or 135167893 counting only the distinct ones).

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

The spelling of 155443042450 in words is "one hundred fifty-five billion, four hundred forty-three million, forty-two thousand, four hundred fifty".