61110550101 has 4 divisors (see below), whose sum is σ = 81480733472. Its totient is φ = 40740366732.

The previous prime is 61110550049. The next prime is 61110550129. The reversal of 61110550101 is 10105501116.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61110550101 - 2⁹ = 61110549589 is a prime.

It is a super-2 number, since 2×61110550101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110550001) 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, 10185091681 + ... + 10185091686.

It is an arithmetic number, because the mean of its divisors is an integer number (20370183368).

Almost surely, 2^61110550101 is an apocalyptic number.

It is an amenable number.

61110550101 is a deficient number, since it is larger than the sum of its proper divisors (20370183371).

61110550101 is a wasteful number, since it uses less digits than its factorization.

61110550101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20370183370.

The product of its (nonzero) digits is 150, while the sum is 21.

The spelling of 61110550101 in words is "sixty-one billion, one hundred ten million, five hundred fifty thousand, one hundred one".