1551680923716 has 144 divisors (see below), whose sum is σ = 4892298622848. Its totient is φ = 402856588800.

The previous prime is 1551680923699. The next prime is 1551680923717. The reversal of 1551680923716 is 6173290861551.

1551680923716 is a `hidden beast` number, since 1 + 5 + 516 + 8 + 0 + 92 + 37 + 1 + 6 = 666.

It is a super-2 number, since 2×1551680923716² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1551680923717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6234136 + ... + 6478256.

It is an arithmetic number, because the mean of its divisors is an integer number (33974295992).

Almost surely, 2^{1551680923716} 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 1551680923716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2446149311424).

1551680923716 is an abundant number, since it is smaller than the sum of its proper divisors (3340617699132).

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

1551680923716 is a wasteful number, since it uses less digits than its factorization.

1551680923716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246442 (or 246437 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 1551680923716 in words is "one trillion, five hundred fifty-one billion, six hundred eighty million, nine hundred twenty-three thousand, seven hundred sixteen".