1551948537216 has 256 divisors, whose sum is σ = 5236548134400. Its totient is φ = 395497390080.

The previous prime is 1551948537193. The next prime is 1551948537277. The reversal of 1551948537216 is 6127358491551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1071940 + ... + 2062268.

It is an arithmetic number, because the mean of its divisors is an integer number (20455266150).

Almost surely, 2^{1551948537216} is an apocalyptic number.

1551948537216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551948537216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2618274067200).

1551948537216 is an abundant number, since it is smaller than the sum of its proper divisors (3684599597184).

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

1551948537216 is a wasteful number, since it uses less digits than its factorization.

1551948537216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990417 (or 990405 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 57.

The spelling of 1551948537216 in words is "one trillion, five hundred fifty-one billion, nine hundred forty-eight million, five hundred thirty-seven thousand, two hundred sixteen".