40921423872 has 224 divisors, whose sum is σ = 125754335232. Its totient is φ = 11593580544.

The previous prime is 40921423867. The next prime is 40921423897. The reversal of 40921423872 is 27832412904.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 21847128 + ... + 21849000.

Almost surely, 2^40921423872 is an apocalyptic number.

40921423872 is a gapful number since it is divisible by the number (42) 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 40921423872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62877167616).

40921423872 is an abundant number, since it is smaller than the sum of its proper divisors (84832911360).

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

40921423872 is a wasteful number, since it uses less digits than its factorization.

40921423872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 40921423872 in words is "forty billion, nine hundred twenty-one million, four hundred twenty-three thousand, eight hundred seventy-two".