61105928007 has 4 divisors (see below), whose sum is σ = 81474570680. Its totient is φ = 40737285336.

The previous prime is 61105927997. The next prime is 61105928033. The reversal of 61105928007 is 70082950116.

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

It is not a de Polignac number, because 61105928007 - 2⁶ = 61105927943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61105928047) 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, 10184321332 + ... + 10184321337.

It is an arithmetic number, because the mean of its divisors is an integer number (20368642670).

Almost surely, 2^61105928007 is an apocalyptic number.

61105928007 is a deficient number, since it is larger than the sum of its proper divisors (20368642673).

61105928007 is a wasteful number, since it uses less digits than its factorization.

61105928007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368642672.

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 61105928007 in words is "sixty-one billion, one hundred five million, nine hundred twenty-eight thousand, seven".