61914875929 has 3 divisors (see below), whose sum is σ = 61915124757. Its totient is φ = 61914627102.

The previous prime is 61914875923. The next prime is 61914875933. The reversal of 61914875929 is 92957841916.

The square root of 61914875929 is 248827.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 61914875929 - 2¹⁹ = 61914351641 is a prime.

It is a super-2 number, since 2×61914875929² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61914875923) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 124414 + ... + 373240.

It is an arithmetic number, because the mean of its divisors is an integer number (20638374919).

Almost surely, 2^61914875929 is an apocalyptic number.

61914875929 is the 248827-th square number.

61914875929 is the 124414-th centered octagonal number.

It is an amenable number.

61914875929 is a deficient number, since it is larger than the sum of its proper divisors (248828).

61914875929 is an frugal number, since it uses more digits than its factorization.

61914875929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497654 (or 248827 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 61.

The spelling of 61914875929 in words is "sixty-one billion, nine hundred fourteen million, eight hundred seventy-five thousand, nine hundred twenty-nine".