61240741571 has 4 divisors (see below), whose sum is σ = 64843138152. Its totient is φ = 57638344992.

The previous prime is 61240741531. The next prime is 61240741699. The reversal of 61240741571 is 17514704216.

61240741571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61240741571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61240741531) 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, 1801198265 + ... + 1801198298.

It is an arithmetic number, because the mean of its divisors is an integer number (16210784538).

Almost surely, 2^61240741571 is an apocalyptic number.

61240741571 is a deficient number, since it is larger than the sum of its proper divisors (3602396581).

61240741571 is a wasteful number, since it uses less digits than its factorization.

61240741571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602396580.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 61240741571 in words is "sixty-one billion, two hundred forty million, seven hundred forty-one thousand, five hundred seventy-one".