977428489122 has 54 divisors (see below), whose sum is σ = 2188571476689. Its totient is φ = 315257567760.

The previous prime is 977428489087. The next prime is 977428489133. The reversal of 977428489122 is 221984824779.

977428489122 is a `hidden beast` number, since 9 + 7 + 7 + 4 + 28 + 489 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 726809105961 + 250619383161 = 852531^2 + 500619^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=699081.

It is a self number, because there is not a number n which added to its sum of digits gives 977428489122.

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 26 ways as a sum of consecutive naturals, for example, 130025308 + ... + 130032824.

Almost surely, 2^977428489122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977428489122

977428489122 is an abundant number, since it is smaller than the sum of its proper divisors (1211142987567).

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

977428489122 is an frugal number, since it uses more digits than its factorization.

977428489122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15104 (or 7553 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 63.

The spelling of 977428489122 in words is "nine hundred seventy-seven billion, four hundred twenty-eight million, four hundred eighty-nine thousand, one hundred twenty-two".