61013761571 has 16 divisors (see below), whose sum is σ = 75383804160. Its totient is φ = 48205951200.

The previous prime is 61013761559. The next prime is 61013761631. The reversal of 61013761571 is 17516731016.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61013761571 - 2²⁶ = 60946652707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61013763571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6194405 + ... + 6204246.

It is an arithmetic number, because the mean of its divisors is an integer number (4711487760).

Almost surely, 2^61013761571 is an apocalyptic number.

61013761571 is a deficient number, since it is larger than the sum of its proper divisors (14370042589).

61013761571 is a wasteful number, since it uses less digits than its factorization.

61013761571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12398714.

The product of its (nonzero) digits is 26460, while the sum is 38.

The spelling of 61013761571 in words is "sixty-one billion, thirteen million, seven hundred sixty-one thousand, five hundred seventy-one".