838897374780 has 768 divisors, whose sum is σ = 2817739653120. Its totient is φ = 206928691200.

The previous prime is 838897374779. The next prime is 838897374803. The reversal of 838897374780 is 87473798838.

838897374780 is a `hidden beast` number, since 8 + 3 + 8 + 89 + 73 + 7 + 478 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 838897374699 and 838897374708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 6605491077 + ... + 6605491203.

It is an arithmetic number, because the mean of its divisors is an integer number (3668931840).

Almost surely, 2^838897374780 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 838897374780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408869826560).

838897374780 is an abundant number, since it is smaller than the sum of its proper divisors (1978842278340).

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

838897374780 is a wasteful number, since it uses less digits than its factorization.

838897374780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 455196672, while the sum is 72.

The spelling of 838897374780 in words is "eight hundred thirty-eight billion, eight hundred ninety-seven million, three hundred seventy-four thousand, seven hundred eighty".