49902185520 has 480 divisors, whose sum is σ = 196948537344. Its totient is φ = 11196979200.

The previous prime is 49902185491. The next prime is 49902185521. The reversal of 49902185520 is 2558120994.

It is a happy number.

49902185520 is a `hidden beast` number, since 4 + 9 + 90 + 2 + 1 + 8 + 552 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (49902185521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5642542 + ... + 5651378.

Almost surely, 2^49902185520 is an apocalyptic number.

49902185520 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 49902185520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98474268672).

49902185520 is an abundant number, since it is smaller than the sum of its proper divisors (147046351824).

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

49902185520 is a wasteful number, since it uses less digits than its factorization.

49902185520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921 (or 8912 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 49902185520 in words is "forty-nine billion, nine hundred two million, one hundred eighty-five thousand, five hundred twenty".