61089369291 has 32 divisors (see below), whose sum is σ = 91230742080. Its totient is φ = 40399527168.

The previous prime is 61089369239. The next prime is 61089369293. The reversal of 61089369291 is 19296398016.

It is not a de Polignac number, because 61089369291 - 2⁶ = 61089369227 is a prime.

It is a super-2 number, since 2×61089369291² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61089369293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2603785 + ... + 2627141.

It is an arithmetic number, because the mean of its divisors is an integer number (2850960690).

Almost surely, 2^61089369291 is an apocalyptic number.

61089369291 is a deficient number, since it is larger than the sum of its proper divisors (30141372789).

61089369291 is a wasteful number, since it uses less digits than its factorization.

61089369291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24140 (or 24134 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 61089369291 in words is "sixty-one billion, eighty-nine million, three hundred sixty-nine thousand, two hundred ninety-one".