61749463546 has 16 divisors (see below), whose sum is σ = 93103836480. Its totient is φ = 30714979680.

The previous prime is 61749463537. The next prime is 61749463547. The reversal of 61749463546 is 64536494716.

It is not an unprimeable number, because it can be changed into a prime (61749463547) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 972315 + ... + 1033873.

It is an arithmetic number, because the mean of its divisors is an integer number (5818989780).

Almost surely, 2^61749463546 is an apocalyptic number.

61749463546 is a deficient number, since it is larger than the sum of its proper divisors (31354372934).

61749463546 is a wasteful number, since it uses less digits than its factorization.

61749463546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64149.

The product of its digits is 13063680, while the sum is 55.

The spelling of 61749463546 in words is "sixty-one billion, seven hundred forty-nine million, four hundred sixty-three thousand, five hundred forty-six".