155620450844 has 12 divisors (see below), whose sum is σ = 274163547000. Its totient is φ = 77288008848.

The previous prime is 155620450841. The next prime is 155620450889. The reversal of 155620450844 is 448054026551.

It is a junction number, because it is equal to n+sod(n) for n = 155620450795 and 155620450804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155620450841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130553474 + ... + 130554665.

It is an arithmetic number, because the mean of its divisors is an integer number (22846962250).

Almost surely, 2^155620450844 is an apocalyptic number.

It is an amenable number.

155620450844 is a deficient number, since it is larger than the sum of its proper divisors (118543096156).

155620450844 is a wasteful number, since it uses less digits than its factorization.

155620450844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261108292 (or 261108290 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 44.

The spelling of 155620450844 in words is "one hundred fifty-five billion, six hundred twenty million, four hundred fifty thousand, eight hundred forty-four".