61570481956 has 9 divisors (see below), whose sum is σ = 107749211899. Its totient is φ = 30784992844.

The previous prime is 61570481927. The next prime is 61570482023. The reversal of 61570481956 is 65918407516.

The square root of 61570481956 is 248134.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 434235 + ... + 558301.

Almost surely, 2^61570481956 is an apocalyptic number.

61570481956 is the 248134-th square number.

It is an amenable number.

61570481956 is a deficient number, since it is larger than the sum of its proper divisors (46178729943).

61570481956 is an frugal number, since it uses more digits than its factorization.

61570481956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248138 (or 124069 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 61570481956 in words is "sixty-one billion, five hundred seventy million, four hundred eighty-one thousand, nine hundred fifty-six".