978961796699381 has 8 divisors (see below), whose sum is σ = 1067988379492704. Its totient is φ = 889940223209520.

The previous prime is 978961796699357. The next prime is 978961796699399. The reversal of 978961796699381 is 183996697169879.

978961796699381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 978961796699381 - 2⁶ = 978961796699317 is a prime.

It is a super-2 number, since 2×978961796699381² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978961796699321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251917231 + ... + 1252698956.

It is an arithmetic number, because the mean of its divisors is an integer number (133498547436588).

Almost surely, 2^{978961796699381} is an apocalyptic number.

It is an amenable number.

978961796699381 is a deficient number, since it is larger than the sum of its proper divisors (89026582793323).

978961796699381 is a wasteful number, since it uses less digits than its factorization.

978961796699381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504651731.

The product of its digits is 119995126272, while the sum is 98.

The spelling of 978961796699381 in words is "nine hundred seventy-eight trillion, nine hundred sixty-one billion, seven hundred ninety-six million, six hundred ninety-nine thousand, three hundred eighty-one".