61719070516 has 12 divisors (see below), whose sum is σ = 108091402020. Its totient is φ = 30835812800.

The previous prime is 61719070507. The next prime is 61719070547. The reversal of 61719070516 is 61507091716.

It can be written as a sum of positive squares in 2 ways, for example, as 25986729616 + 35732340900 = 161204^2 + 189030^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5924761 + ... + 5935168.

It is an arithmetic number, because the mean of its divisors is an integer number (9007616835).

Almost surely, 2^61719070516 is an apocalyptic number.

It is an amenable number.

61719070516 is a deficient number, since it is larger than the sum of its proper divisors (46372331504).

61719070516 is a wasteful number, since it uses less digits than its factorization.

61719070516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11861234 (or 11861232 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 43.

The spelling of 61719070516 in words is "sixty-one billion, seven hundred nineteen million, seventy thousand, five hundred sixteen".