49439981261450 has 192 divisors, whose sum is σ = 108795395086560. Its totient is φ = 16539245936640.

The previous prime is 49439981261443. The next prime is 49439981261521. The reversal of 49439981261450 is 5416218993494.

It is a Cunningham number, because it is equal to 7031357²+1.

It can be written as a sum of positive squares in 48 ways, for example, as 15484642112809 + 33955339148641 = 3935053^2 + 5827121^2 .

It is a super-2 number, since 2×49439981261450² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107762744 + ... + 108220556.

Almost surely, 2^{49439981261450} is an apocalyptic number.

49439981261450 is an abundant number, since it is smaller than the sum of its proper divisors (59355413825110).

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

49439981261450 is a wasteful number, since it uses less digits than its factorization.

49439981261450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458221 (or 458216 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 49439981261450 in words is "forty-nine trillion, four hundred thirty-nine billion, nine hundred eighty-one million, two hundred sixty-one thousand, four hundred fifty".