61910943479 has 16 divisors (see below), whose sum is σ = 79677597696. Its totient is φ = 46686088800.

The previous prime is 61910943461. The next prime is 61910943481. The reversal of 61910943479 is 97434901916.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61910943479 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61910943479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61910943379) 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, 12965972 + ... + 12970745.

It is an arithmetic number, because the mean of its divisors is an integer number (4979849856).

Almost surely, 2^61910943479 is an apocalyptic number.

61910943479 is a deficient number, since it is larger than the sum of its proper divisors (17766654217).

61910943479 is a wasteful number, since it uses less digits than its factorization.

61910943479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25936766.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 61910943479 in words is "sixty-one billion, nine hundred ten million, nine hundred forty-three thousand, four hundred seventy-nine".