49157570061 has 14 divisors (see below), whose sum is σ = 73702640430. Its totient is φ = 32771712888.

The previous prime is 49157570057. The next prime is 49157570071. The reversal of 49157570061 is 16007575194.

49157570061 is a `hidden beast` number, since 4 + 9 + 1 + 575 + 70 + 0 + 6 + 1 = 666.

49157570061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 46399744836 + 2757825225 = 215406^2 + 52515^2 .

It is not a de Polignac number, because 49157570061 - 2² = 49157570057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49157569989 and 49157570016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49157570041) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 33715026 + ... + 33716483.

Almost surely, 2^49157570061 is an apocalyptic number.

It is an amenable number.

49157570061 is a deficient number, since it is larger than the sum of its proper divisors (24545070369).

49157570061 is an frugal number, since it uses more digits than its factorization.

49157570061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67431527 (or 67431512 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 49157570061 in words is "forty-nine billion, one hundred fifty-seven million, five hundred seventy thousand, sixty-one".