61102043501 has 16 divisors (see below), whose sum is σ = 67526089344. Its totient is φ = 54993675264.

The previous prime is 61102043479. The next prime is 61102043539. The reversal of 61102043501 is 10534020116.

It is a cyclic number.

It is not a de Polignac number, because 61102043501 - 2²⁶ = 61034934637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61102043581) 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, 1744901 + ... + 1779573.

It is an arithmetic number, because the mean of its divisors is an integer number (4220380584).

Almost surely, 2^61102043501 is an apocalyptic number.

It is an amenable number.

61102043501 is a deficient number, since it is larger than the sum of its proper divisors (6424045843).

61102043501 is a wasteful number, since it uses less digits than its factorization.

61102043501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39220.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 61102043501 its reverse (10534020116), we get a palindrome (71636063617).

The spelling of 61102043501 in words is "sixty-one billion, one hundred two million, forty-three thousand, five hundred one".