155545530641644 has 288 divisors, whose sum is σ = 347022900000000. Its totient is φ = 60269797785600.

The previous prime is 155545530641621. The next prime is 155545530641681. The reversal of 155545530641644 is 446146035545551.

155545530641644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155545530641644² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7235001607 + ... + 7235023105.

It is an arithmetic number, because the mean of its divisors is an integer number (1204940625000).

Almost surely, 2^{155545530641644} is an apocalyptic number.

It is an amenable number.

155545530641644 is an abundant number, since it is smaller than the sum of its proper divisors (191477369358356).

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

155545530641644 is a wasteful number, since it uses less digits than its factorization.

155545530641644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22849 (or 22834 counting only the distinct ones).

The product of its (nonzero) digits is 86400000, while the sum is 58.

The spelling of 155545530641644 in words is "one hundred fifty-five trillion, five hundred forty-five billion, five hundred thirty million, six hundred forty-one thousand, six hundred forty-four".