1553154450545 has 8 divisors (see below), whose sum is σ = 1865840236224. Its totient is φ = 1241153630064.

The previous prime is 1553154450521. The next prime is 1553154450593. The reversal of 1553154450545 is 5450544513551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1553154450545 - 2¹⁶ = 1553154385009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1553154450545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171236309 + ... + 171245378.

It is an arithmetic number, because the mean of its divisors is an integer number (233230029528).

Almost surely, 2^{1553154450545} is an apocalyptic number.

It is an amenable number.

1553154450545 is a deficient number, since it is larger than the sum of its proper divisors (312685785679).

1553154450545 is an equidigital number, since it uses as much as digits as its factorization.

1553154450545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342482599.

The product of its (nonzero) digits is 3000000, while the sum is 47.

The spelling of 1553154450545 in words is "one trillion, five hundred fifty-three billion, one hundred fifty-four million, four hundred fifty thousand, five hundred forty-five".