49988522497581 has 24 divisors (see below), whose sum is σ = 74971122620160. Its totient is φ = 32057787636000.

The previous prime is 49988522497493. The next prime is 49988522497603. The reversal of 49988522497581 is 18579422588994.

49988522497581 is a `hidden beast` number, since 4 + 9 + 9 + 8 + 8 + 5 + 2 + 24 + 9 + 7 + 581 = 666.

49988522497581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49988522497581 - 2¹⁸ = 49988522235437 is a prime.

It is a super-2 number, since 2×49988522497581² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49988522497581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49988522497481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353299945 + ... + 353441406.

It is an arithmetic number, because the mean of its divisors is an integer number (3123796775840).

Almost surely, 2^{49988522497581} is an apocalyptic number.

It is an amenable number.

49988522497581 is a deficient number, since it is larger than the sum of its proper divisors (24982600122579).

49988522497581 is a wasteful number, since it uses less digits than its factorization.

49988522497581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706741657 (or 706741654 counting only the distinct ones).

The product of its digits is 4180377600, while the sum is 81.

The spelling of 49988522497581 in words is "forty-nine trillion, nine hundred eighty-eight billion, five hundred twenty-two million, four hundred ninety-seven thousand, five hundred eighty-one".