61734223727 has 8 divisors (see below), whose sum is σ = 67640517840. Its totient is φ = 55876944960.

The previous prime is 61734223723. The next prime is 61734223729. The reversal of 61734223727 is 72732243716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61734223727 - 2² = 61734223723 is a prime.

It is a super-2 number, since 2×61734223727² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61734223723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12251198 + ... + 12256235.

It is an arithmetic number, because the mean of its divisors is an integer number (8455064730).

Almost surely, 2^61734223727 is an apocalyptic number.

61734223727 is a deficient number, since it is larger than the sum of its proper divisors (5906294113).

61734223727 is a wasteful number, since it uses less digits than its factorization.

61734223727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24507673.

The product of its digits is 592704, while the sum is 44.

The spelling of 61734223727 in words is "sixty-one billion, seven hundred thirty-four million, two hundred twenty-three thousand, seven hundred twenty-seven".