977887229040 has 240 divisors, whose sum is σ = 3410555148000. Its totient is φ = 260398457856.

The previous prime is 977887229027. The next prime is 977887229051. The reversal of 977887229040 is 40922788779.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13747486 + ... + 13818434.

It is an arithmetic number, because the mean of its divisors is an integer number (14210646450).

Almost surely, 2^977887229040 is an apocalyptic number.

977887229040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977887229040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1705277574000).

977887229040 is an abundant number, since it is smaller than the sum of its proper divisors (2432667918960).

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

977887229040 is a wasteful number, since it uses less digits than its factorization.

977887229040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71686 (or 71668 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 977887229040 in words is "nine hundred seventy-seven billion, eight hundred eighty-seven million, two hundred twenty-nine thousand, forty".