49511026440 has 224 divisors, whose sum is σ = 176849979480. Its totient is φ = 12426172416.

The previous prime is 49511026421. The next prime is 49511026489. The reversal of 49511026440 is 4462011594.

49511026440 is a `hidden beast` number, since 4 + 9 + 5 + 1 + 1 + 0 + 2 + 644 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 47995170084 + 1515856356 = 219078^2 + 38934^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 49511026395 and 49511026404.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 445782 + ... + 545658.

Almost surely, 2^49511026440 is an apocalyptic number.

49511026440 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 49511026440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88424989740).

49511026440 is an abundant number, since it is smaller than the sum of its proper divisors (127338953040).

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

49511026440 is a wasteful number, since it uses less digits than its factorization.

49511026440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99923 (or 99904 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 49511026440 in words is "forty-nine billion, five hundred eleven million, twenty-six thousand, four hundred forty".