890655397742880 has 384 divisors, whose sum is σ = 3886496282511360. Its totient is φ = 185071251409920.

The previous prime is 890655397742771. The next prime is 890655397742881. The reversal of 890655397742880 is 88247793556098.

890655397742880 is a `hidden beast` number, since 8 + 9 + 0 + 6 + 5 + 539 + 7 + 74 + 2 + 8 + 8 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 890655397742880.

It is not an unprimeable number, because it can be changed into a prime (890655397742881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1338435094 + ... + 1339100373.

It is an arithmetic number, because the mean of its divisors is an integer number (10121084069040).

Almost surely, 2^{890655397742880} is an apocalyptic number.

890655397742880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

890655397742880 is an abundant number, since it is smaller than the sum of its proper divisors (2995840884768480).

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

890655397742880 is a wasteful number, since it uses less digits than its factorization.

890655397742880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677535509 (or 2677535495 counting only the distinct ones).

The product of its (nonzero) digits is 7315660800, while the sum is 81.

The spelling of 890655397742880 in words is "eight hundred ninety trillion, six hundred fifty-five billion, three hundred ninety-seven million, seven hundred forty-two thousand, eight hundred eighty".