49221621432 has 128 divisors (see below), whose sum is σ = 148300891200. Its totient is φ = 15065395200.

The previous prime is 49221621419. The next prime is 49221621437. The reversal of 49221621432 is 23412612294.

It is a happy number.

49221621432 is a `hidden beast` number, since 4 + 9 + 2 + 21 + 621 + 4 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49221621437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12919 + ... + 314022.

Almost surely, 2^49221621432 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 49221621432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74150445600).

49221621432 is an abundant number, since it is smaller than the sum of its proper divisors (99079269768).

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

49221621432 is a wasteful number, since it uses less digits than its factorization.

49221621432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327014 (or 327004 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 49221621432 in words is "forty-nine billion, two hundred twenty-one million, six hundred twenty-one thousand, four hundred thirty-two".