73553255121 has 16 divisors (see below), whose sum is σ = 98376145920. Its totient is φ = 48883024080.

The previous prime is 73553255023. The next prime is 73553255159. The reversal of 73553255121 is 12155235537.

It is not a de Polignac number, because 73553255121 - 2¹⁷ = 73553124049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73553255121.

It is not an unprimeable number, because it can be changed into a prime (73553275121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3965956 + ... + 3984458.

It is an arithmetic number, because the mean of its divisors is an integer number (6148509120).

Almost surely, 2^73553255121 is an apocalyptic number.

It is an amenable number.

73553255121 is a deficient number, since it is larger than the sum of its proper divisors (24822890799).

73553255121 is a wasteful number, since it uses less digits than its factorization.

73553255121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22556.

The product of its digits is 157500, while the sum is 39.

It can be divided in two parts, 735532 and 55121, that added together give a triangular number (790653 = T₁₂₅₇).

The spelling of 73553255121 in words is "seventy-three billion, five hundred fifty-three million, two hundred fifty-five thousand, one hundred twenty-one".