1537747906968 has 128 divisors (see below), whose sum is σ = 5257257868800. Its totient is φ = 405559882368.

The previous prime is 1537747906939. The next prime is 1537747907023. The reversal of 1537747906968 is 8696097477351.

It is a happy number.

1537747906968 is a `hidden beast` number, since 1 + 5 + 37 + 7 + 479 + 0 + 69 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1537747906896 and 1537747906905.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 39096846 + ... + 39136157.

It is an arithmetic number, because the mean of its divisors is an integer number (41072327100).

Almost surely, 2^{1537747906968} is an apocalyptic number.

1537747906968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1537747906968 is an abundant number, since it is smaller than the sum of its proper divisors (3719509961832).

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

1537747906968 is a wasteful number, since it uses less digits than its factorization.

1537747906968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78233038 (or 78233028 counting only the distinct ones).

The product of its (nonzero) digits is 480090240, while the sum is 72.

The spelling of 1537747906968 in words is "one trillion, five hundred thirty-seven billion, seven hundred forty-seven million, nine hundred six thousand, nine hundred sixty-eight".