61974641229 has 4 divisors (see below), whose sum is σ = 82632854976. Its totient is φ = 41316427484.

The previous prime is 61974641203. The next prime is 61974641231. The reversal of 61974641229 is 92214647916.

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 a cyclic number.

It is not a de Polignac number, because 61974641229 - 2²⁸ = 61706205773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61974641279) 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, 10329106869 + ... + 10329106874.

It is an arithmetic number, because the mean of its divisors is an integer number (20658213744).

Almost surely, 2^61974641229 is an apocalyptic number.

It is an amenable number.

61974641229 is a deficient number, since it is larger than the sum of its proper divisors (20658213747).

61974641229 is a wasteful number, since it uses less digits than its factorization.

61974641229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20658213746.

The product of its digits is 1306368, while the sum is 51.

The spelling of 61974641229 in words is "sixty-one billion, nine hundred seventy-four million, six hundred forty-one thousand, two hundred twenty-nine".