877777723872 has 864 divisors, whose sum is σ = 3083883618816. Its totient is φ = 231882393600.

The previous prime is 877777723861. The next prime is 877777723883. The reversal of 877777723872 is 278327777778.

It is an interprime number because it is at equal distance from previous prime (877777723861) and next prime (877777723883).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 877777723872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6700593247 + ... + 6700593377.

It is an arithmetic number, because the mean of its divisors is an integer number (3569309744).

Almost surely, 2^877777723872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 877777723872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541941809408).

877777723872 is an abundant number, since it is smaller than the sum of its proper divisors (2206105894944).

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

877777723872 is a wasteful number, since it uses less digits than its factorization.

877777723872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 330 counting only the distinct ones).

The product of its digits is 632481024, while the sum is 72.

The spelling of 877777723872 in words is "eight hundred seventy-seven billion, seven hundred seventy-seven million, seven hundred twenty-three thousand, eight hundred seventy-two".