61723837772 has 6 divisors (see below), whose sum is σ = 108016716108. Its totient is φ = 30861918884.

The previous prime is 61723837751. The next prime is 61723837787. The reversal of 61723837772 is 27773832716.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7715479718 + ... + 7715479725.

It is an arithmetic number, because the mean of its divisors is an integer number (18002786018).

Almost surely, 2^61723837772 is an apocalyptic number.

It is an amenable number.

61723837772 is a deficient number, since it is larger than the sum of its proper divisors (46292878336).

61723837772 is a wasteful number, since it uses less digits than its factorization.

61723837772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430959447 (or 15430959445 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 53.

The spelling of 61723837772 in words is "sixty-one billion, seven hundred twenty-three million, eight hundred thirty-seven thousand, seven hundred seventy-two".