1553554545405 has 32 divisors (see below), whose sum is σ = 2565960176640. Its totient is φ = 801806653440.

The previous prime is 1553554545401. The next prime is 1553554545409. The reversal of 1553554545405 is 5045454553551.

It is an interprime number because it is at equal distance from previous prime (1553554545401) and next prime (1553554545409).

It is not a de Polignac number, because 1553554545405 - 2² = 1553554545401 is a prime.

It is a super-2 number, since 2×1553554545405² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553554545401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23760939 + ... + 23826231.

It is an arithmetic number, because the mean of its divisors is an integer number (80186255520).

Almost surely, 2^{1553554545405} is an apocalyptic number.

1553554545405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1553554545405 is a deficient number, since it is larger than the sum of its proper divisors (1012405631235).

1553554545405 is a wasteful number, since it uses less digits than its factorization.

1553554545405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116501.

The product of its (nonzero) digits is 15000000, while the sum is 51.

The spelling of 1553554545405 in words is "one trillion, five hundred fifty-three billion, five hundred fifty-four million, five hundred forty-five thousand, four hundred five".