49902888641 has 4 divisors (see below), whose sum is σ = 49905801984. Its totient is φ = 49899975300.

The previous prime is 49902888617. The next prime is 49902888691. The reversal of 49902888641 is 14688820994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49902888641 - 2²² = 49898694337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49902888691) 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 3 ways as a sum of consecutive naturals, for example, 1430825 + ... + 1465286.

It is an arithmetic number, because the mean of its divisors is an integer number (12476450496).

Almost surely, 2^49902888641 is an apocalyptic number.

It is an amenable number.

49902888641 is a deficient number, since it is larger than the sum of its proper divisors (2913343).

49902888641 is a wasteful number, since it uses less digits than its factorization.

49902888641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913342.

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 49902888641 in words is "forty-nine billion, nine hundred two million, eight hundred eighty-eight thousand, six hundred forty-one".