49775900781 has 8 divisors (see below), whose sum is σ = 66579906880. Its totient is φ = 33077914272.

The previous prime is 49775900749. The next prime is 49775900813. The reversal of 49775900781 is 18700957794.

It is an interprime number because it is at equal distance from previous prime (49775900749) and next prime (49775900813).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49775900781 - 2⁵ = 49775900749 is a prime.

It is a super-3 number, since 3×49775900781³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49775950781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26503801 + ... + 26505678.

It is an arithmetic number, because the mean of its divisors is an integer number (8322488360).

Almost surely, 2^49775900781 is an apocalyptic number.

It is an amenable number.

49775900781 is a deficient number, since it is larger than the sum of its proper divisors (16804006099).

49775900781 is a wasteful number, since it uses less digits than its factorization.

49775900781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53009795.

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 49775900781 in words is "forty-nine billion, seven hundred seventy-five million, nine hundred thousand, seven hundred eighty-one".