61734357481 has 32 divisors (see below), whose sum is σ = 66677022720. Its totient is φ = 56953322496.

The previous prime is 61734357403. The next prime is 61734357491. The reversal of 61734357481 is 18475343716.

It is a cyclic number.

It is not a de Polignac number, because 61734357481 - 2¹⁹ = 61733833193 is a prime.

It is a super-2 number, since 2×61734357481² (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 (61734357491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73580460 + ... + 73581298.

It is an arithmetic number, because the mean of its divisors is an integer number (2083656960).

Almost surely, 2^61734357481 is an apocalyptic number.

It is an amenable number.

61734357481 is a deficient number, since it is larger than the sum of its proper divisors (4942665239).

61734357481 is a wasteful number, since it uses less digits than its factorization.

61734357481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353.

The product of its digits is 1693440, while the sum is 49.

The spelling of 61734357481 in words is "sixty-one billion, seven hundred thirty-four million, three hundred fifty-seven thousand, four hundred eighty-one".