61520441101 has 16 divisors (see below), whose sum is σ = 73645000704. Its totient is φ = 50247301104.

The previous prime is 61520441077. The next prime is 61520441117. The reversal of 61520441101 is 10114402516.

It is not a de Polignac number, because 61520441101 - 2⁹ = 61520440589 is a prime.

It is a super-2 number, since 2×61520441101² (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 (61520441141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684111 + ... + 768796.

It is an arithmetic number, because the mean of its divisors is an integer number (4602812544).

Almost surely, 2^61520441101 is an apocalyptic number.

It is an amenable number.

61520441101 is a deficient number, since it is larger than the sum of its proper divisors (12124559603).

61520441101 is a wasteful number, since it uses less digits than its factorization.

61520441101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453200.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 61520441101 its reverse (10114402516), we get a palindrome (71634843617).

The spelling of 61520441101 in words is "sixty-one billion, five hundred twenty million, four hundred forty-one thousand, one hundred one".