49145434240 has 128 divisors (see below), whose sum is σ = 134650771200. Its totient is φ = 16802377728.

The previous prime is 49145434237. The next prime is 49145434241. The reversal of 49145434240 is 4243454194.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 49145434193 and 49145434202.

It is not an unprimeable number, because it can be changed into a prime (49145434241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593042 + ... + 1623598.

It is an arithmetic number, because the mean of its divisors is an integer number (1051959150).

Almost surely, 2^49145434240 is an apocalyptic number.

49145434240 is a gapful number since it is divisible by the number (40) 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 49145434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67325385600).

49145434240 is an abundant number, since it is smaller than the sum of its proper divisors (85505336960).

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

49145434240 is a wasteful number, since it uses less digits than its factorization.

49145434240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30942 (or 30930 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 49145434240 in words is "forty-nine billion, one hundred forty-five million, four hundred thirty-four thousand, two hundred forty".