1553971670048 has 54 divisors (see below), whose sum is σ = 3558985671213. Its totient is φ = 665966703360.

The previous prime is 1553971669969. The next prime is 1553971670077. The reversal of 1553971670048 is 8400761793551.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1146381358864 + 407590311184 = 1070692^2 + 638428^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=881468.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 1553971669975 and 1553971670002.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 49346468 + ... + 49377948.

Almost surely, 2^{1553971670048} is an apocalyptic number.

It is an amenable number.

1553971670048 is an abundant number, since it is smaller than the sum of its proper divisors (2005014001165).

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

1553971670048 is an frugal number, since it uses more digits than its factorization.

1553971670048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62986 (or 31490 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 1553971670048 in words is "one trillion, five hundred fifty-three billion, nine hundred seventy-one million, six hundred seventy thousand, forty-eight".