49646867761 has 4 divisors (see below), whose sum is σ = 49648202752. Its totient is φ = 49645532772.

The previous prime is 49646867731. The next prime is 49646867771. The reversal of 49646867761 is 16776864694.

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 49646867761 - 2¹⁹ = 49646343473 is a prime.

It is a super-2 number, since 2×49646867761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49646867693 and 49646867702.

It is not an unprimeable number, because it can be changed into a prime (49646867731) 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, 610065 + ... + 686638.

It is an arithmetic number, because the mean of its divisors is an integer number (12412050688).

Almost surely, 2^49646867761 is an apocalyptic number.

It is an amenable number.

49646867761 is a deficient number, since it is larger than the sum of its proper divisors (1334991).

49646867761 is a wasteful number, since it uses less digits than its factorization.

49646867761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334990.

The product of its digits is 73156608, while the sum is 64.

The spelling of 49646867761 in words is "forty-nine billion, six hundred forty-six million, eight hundred sixty-seven thousand, seven hundred sixty-one".