49546576778391 has 48 divisors (see below), whose sum is σ = 89243997343488. Its totient is φ = 25733502115200.

The previous prime is 49546576778381. The next prime is 49546576778417. The reversal of 49546576778391 is 19387767564594.

49546576778391 is a `hidden beast` number, since 4 + 9 + 5 + 4 + 6 + 576 + 7 + 7 + 8 + 39 + 1 = 666.

It is not a de Polignac number, because 49546576778391 - 2⁹ = 49546576777879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49546576778391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49546576778311) 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, 3329646 + ... + 10496651.

It is an arithmetic number, because the mean of its divisors is an integer number (1859249944656).

Almost surely, 2^{49546576778391} is an apocalyptic number.

49546576778391 is a deficient number, since it is larger than the sum of its proper divisors (39697420565097).

49546576778391 is a wasteful number, since it uses less digits than its factorization.

49546576778391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831492 (or 13831489 counting only the distinct ones).

The product of its digits is 9601804800, while the sum is 81.

The spelling of 49546576778391 in words is "forty-nine trillion, five hundred forty-six billion, five hundred seventy-six million, seven hundred seventy-eight thousand, three hundred ninety-one".