49504678551 has 48 divisors (see below), whose sum is σ = 75814502400. Its totient is φ = 32266146528.

The previous prime is 49504678537. The next prime is 49504678583. The reversal of 49504678551 is 15587640594.

It is a happy number.

49504678551 is a `hidden beast` number, since 4 + 9 + 50 + 467 + 85 + 51 = 666.

It is not a de Polignac number, because 49504678551 - 2⁵ = 49504678519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49504678501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14605765 + ... + 14609153.

It is an arithmetic number, because the mean of its divisors is an integer number (1579468800).

Almost surely, 2^49504678551 is an apocalyptic number.

49504678551 is a deficient number, since it is larger than the sum of its proper divisors (26309823849).

49504678551 is a wasteful number, since it uses less digits than its factorization.

49504678551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730 (or 4718 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 49504678551 in words is "forty-nine billion, five hundred four million, six hundred seventy-eight thousand, five hundred fifty-one".