49076778431 has 4 divisors (see below), whose sum is σ = 49553252112. Its totient is φ = 48600304752.

The previous prime is 49076778419. The next prime is 49076778449. The reversal of 49076778431 is 13487767094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49076778431 - 2¹⁴ = 49076762047 is a prime.

It is a super-2 number, since 2×49076778431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49076778031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238236686 + ... + 238236891.

It is an arithmetic number, because the mean of its divisors is an integer number (12388313028).

Almost surely, 2^49076778431 is an apocalyptic number.

49076778431 is a deficient number, since it is larger than the sum of its proper divisors (476473681).

49076778431 is a wasteful number, since it uses less digits than its factorization.

49076778431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476473680.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 49076778431 in words is "forty-nine billion, seventy-six million, seven hundred seventy-eight thousand, four hundred thirty-one".