61870948928 has 42 divisors (see below), whose sum is σ = 130014473778. Its totient is φ = 29111879680.

The previous prime is 61870948903. The next prime is 61870948949. The reversal of 61870948928 is 82984907816.

It can be written as a sum of positive squares in 3 ways, for example, as 600838144 + 61270110784 = 24512^2 + 247528^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8200838 + ... + 8208378.

It is an arithmetic number, because the mean of its divisors is an integer number (3095582709).

Almost surely, 2^61870948928 is an apocalyptic number.

61870948928 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61870948928 is an abundant number, since it is smaller than the sum of its proper divisors (68143524850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61870948928 is an frugal number, since it uses more digits than its factorization.

61870948928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15111 (or 7560 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 61870948928 in words is "sixty-one billion, eight hundred seventy million, nine hundred forty-eight thousand, nine hundred twenty-eight".