61733247645 has 32 divisors (see below), whose sum is σ = 99015081984. Its totient is φ = 32843880000.

The previous prime is 61733247623. The next prime is 61733247679. The reversal of 61733247645 is 54674233716.

It is not a de Polignac number, because 61733247645 - 2⁹ = 61733247133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61733247594 and 61733247603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12287604 + ... + 12292626.

It is an arithmetic number, because the mean of its divisors is an integer number (3094221312).

Almost surely, 2^61733247645 is an apocalyptic number.

It is an amenable number.

61733247645 is a deficient number, since it is larger than the sum of its proper divisors (37281834339).

61733247645 is a wasteful number, since it uses less digits than its factorization.

61733247645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873.

The product of its digits is 2540160, while the sum is 48.

The spelling of 61733247645 in words is "sixty-one billion, seven hundred thirty-three million, two hundred forty-seven thousand, six hundred forty-five".