61140613011 has 4 divisors (see below), whose sum is σ = 81520817352. Its totient is φ = 40760408672.

The previous prime is 61140613007. The next prime is 61140613099. The reversal of 61140613011 is 11031604116.

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

It is a cyclic number.

It is not a de Polignac number, because 61140613011 - 2² = 61140613007 is a prime.

It is a super-2 number, since 2×61140613011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61140613511) 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, 10190102166 + ... + 10190102171.

It is an arithmetic number, because the mean of its divisors is an integer number (20380204338).

Almost surely, 2^61140613011 is an apocalyptic number.

61140613011 is a deficient number, since it is larger than the sum of its proper divisors (20380204341).

61140613011 is a wasteful number, since it uses less digits than its factorization.

61140613011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20380204340.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 61140613011 in words is "sixty-one billion, one hundred forty million, six hundred thirteen thousand, eleven".