49157166811 has 4 divisors (see below), whose sum is σ = 49157756992. Its totient is φ = 49156576632.

The previous prime is 49157166791. The next prime is 49157166887. The reversal of 49157166811 is 11866175194.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 49157166811 - 2¹³ = 49157158619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49157164811) 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, 144555 + ... + 345268.

It is an arithmetic number, because the mean of its divisors is an integer number (12289439248).

Almost surely, 2^49157166811 is an apocalyptic number.

49157166811 is a deficient number, since it is larger than the sum of its proper divisors (590181).

49157166811 is a wasteful number, since it uses less digits than its factorization.

49157166811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590180.

The product of its digits is 362880, while the sum is 49.

The spelling of 49157166811 in words is "forty-nine billion, one hundred fifty-seven million, one hundred sixty-six thousand, eight hundred eleven".