61731477346 has 64 divisors (see below), whose sum is σ = 116944798464. Its totient is φ = 23740416000.

The previous prime is 61731477331. The next prime is 61731477347. The reversal of 61731477346 is 64377413716.

It is a super-2 number, since 2×61731477346² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61731477346.

It is not an unprimeable number, because it can be changed into a prime (61731477347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5235810 + ... + 5247586.

It is an arithmetic number, because the mean of its divisors is an integer number (1827262476).

Almost surely, 2^61731477346 is an apocalyptic number.

61731477346 is a deficient number, since it is larger than the sum of its proper divisors (55213321118).

61731477346 is a wasteful number, since it uses less digits than its factorization.

61731477346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12235.

The product of its digits is 1778112, while the sum is 49.

The spelling of 61731477346 in words is "sixty-one billion, seven hundred thirty-one million, four hundred seventy-seven thousand, three hundred forty-six".