981340871455 has 32 divisors (see below), whose sum is σ = 1474144064640. Its totient is φ = 611496775680.

The previous prime is 981340871429. The next prime is 981340871471. The reversal of 981340871455 is 554178043189.

It is not a de Polignac number, because 981340871455 - 2⁷ = 981340871327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981340871396 and 981340871405.

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, 28419166 + ... + 28453675.

It is an arithmetic number, because the mean of its divisors is an integer number (46067002020).

Almost surely, 2^981340871455 is an apocalyptic number.

981340871455 is a deficient number, since it is larger than the sum of its proper divisors (492803193185).

981340871455 is a wasteful number, since it uses less digits than its factorization.

981340871455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56872899.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 981340871455 in words is "nine hundred eighty-one billion, three hundred forty million, eight hundred seventy-one thousand, four hundred fifty-five".