1655138254848 has 512 divisors, whose sum is σ = 5031074764800. Its totient is φ = 480352665600.

The previous prime is 1655138254843. The next prime is 1655138254907. The reversal of 1655138254848 is 8484528315561.

It is a tau number, because it is divible by the number of its divisors (512).

It is a super-2 number, since 2×1655138254848² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1655138254791 and 1655138254800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655138254841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1624276483 + ... + 1624277501.

It is an arithmetic number, because the mean of its divisors is an integer number (9826317900).

Almost surely, 2^{1655138254848} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655138254848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2515537382400).

1655138254848 is an abundant number, since it is smaller than the sum of its proper divisors (3375936509952).

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

1655138254848 is a wasteful number, since it uses less digits than its factorization.

1655138254848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1109 counting only the distinct ones).

The product of its digits is 36864000, while the sum is 60.

The spelling of 1655138254848 in words is "one trillion, six hundred fifty-five billion, one hundred thirty-eight million, two hundred fifty-four thousand, eight hundred forty-eight".