911975338472 has 64 divisors (see below), whose sum is σ = 1903160586240. Its totient is φ = 406208721600.

The previous prime is 911975338457. The next prime is 911975338489. The reversal of 911975338472 is 274833579119.

It is a super-2 number, since 2×911975338472² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721223 + ... + 1531049.

It is an arithmetic number, because the mean of its divisors is an integer number (29736884160).

Almost surely, 2^911975338472 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 911975338472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (951580293120).

911975338472 is an abundant number, since it is smaller than the sum of its proper divisors (991185247768).

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

911975338472 is a wasteful number, since it uses less digits than its factorization.

911975338472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810102 (or 810098 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 59.

The spelling of 911975338472 in words is "nine hundred eleven billion, nine hundred seventy-five million, three hundred thirty-eight thousand, four hundred seventy-two".