61100510011 has 4 divisors (see below), whose sum is σ = 61489685392. Its totient is φ = 60711334632.

The previous prime is 61100509979. The next prime is 61100510021. The reversal of 61100510011 is 11001500116.

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 61100510011 - 2⁵ = 61100509979 is a prime.

It is a super-2 number, since 2×61100510011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61100510021) 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, 194587455 + ... + 194587768.

It is an arithmetic number, because the mean of its divisors is an integer number (15372421348).

Almost surely, 2^61100510011 is an apocalyptic number.

61100510011 is a deficient number, since it is larger than the sum of its proper divisors (389175381).

61100510011 is a wasteful number, since it uses less digits than its factorization.

61100510011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389175380.

The product of its (nonzero) digits is 30, while the sum is 16.

The spelling of 61100510011 in words is "sixty-one billion, one hundred million, five hundred ten thousand, eleven".