923071481640 has 1536 divisors, whose sum is σ = 4140780134400. Its totient is φ = 172440576000.

The previous prime is 923071481623. The next prime is 923071481677. The reversal of 923071481640 is 46184170329.

923071481640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2192568630 + ... + 2192569050.

It is an arithmetic number, because the mean of its divisors is an integer number (2695820400).

Almost surely, 2^923071481640 is an apocalyptic number.

923071481640 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 923071481640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2070390067200).

923071481640 is an abundant number, since it is smaller than the sum of its proper divisors (3217708652760).

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

923071481640 is a wasteful number, since it uses less digits than its factorization.

923071481640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 923071481640 in words is "nine hundred twenty-three billion, seventy-one million, four hundred eighty-one thousand, six hundred forty".