881680387501 has 4 divisors (see below), whose sum is σ = 881731318972. Its totient is φ = 881629456032.

The previous prime is 881680387463. The next prime is 881680387543. The reversal of 881680387501 is 105783086188.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 270476965476 + 611203422025 = 520074^2 + 781795^2 .

It is a cyclic number.

It is not a de Polignac number, because 881680387501 - 2⁹ = 881680386989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881680382501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25439760 + ... + 25474393.

It is an arithmetic number, because the mean of its divisors is an integer number (220432829743).

Almost surely, 2^881680387501 is an apocalyptic number.

It is an amenable number.

881680387501 is a deficient number, since it is larger than the sum of its proper divisors (50931471).

881680387501 is a wasteful number, since it uses less digits than its factorization.

881680387501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50931470.

The product of its (nonzero) digits is 2580480, while the sum is 55.

The spelling of 881680387501 in words is "eight hundred eighty-one billion, six hundred eighty million, three hundred eighty-seven thousand, five hundred one".