1554490138245 has 64 divisors (see below), whose sum is σ = 2728465302528. Its totient is φ = 749488320000.

The previous prime is 1554490138241. The next prime is 1554490138321. The reversal of 1554490138245 is 5428310944551.

It is not a de Polignac number, because 1554490138245 - 2² = 1554490138241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554490138241) 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 63 ways as a sum of consecutive naturals, for example, 22893345 + ... + 22961145.

It is an arithmetic number, because the mean of its divisors is an integer number (42632270352).

Almost surely, 2^{1554490138245} is an apocalyptic number.

1554490138245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1554490138245 is a deficient number, since it is larger than the sum of its proper divisors (1173975164283).

1554490138245 is a wasteful number, since it uses less digits than its factorization.

1554490138245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68594.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 1554490138245 in words is "one trillion, five hundred fifty-four billion, four hundred ninety million, one hundred thirty-eight thousand, two hundred forty-five".