49778003520 has 896 divisors, whose sum is σ = 210414412800. Its totient is φ = 10838016000.

The previous prime is 49778003503. The next prime is 49778003543. The reversal of 49778003520 is 2530087794.

49778003520 is a `hidden beast` number, since 49 + 7 + 7 + 80 + 0 + 3 + 520 = 666.

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 127 ways as a sum of consecutive naturals, for example, 177145780 + ... + 177146060.

Almost surely, 2^49778003520 is an apocalyptic number.

49778003520 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 49778003520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105207206400).

49778003520 is an abundant number, since it is smaller than the sum of its proper divisors (160636409280).

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

49778003520 is a wasteful number, since it uses less digits than its factorization.

49778003520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 49778003520 in words is "forty-nine billion, seven hundred seventy-eight million, three thousand, five hundred twenty".