61187628946 has 16 divisors (see below), whose sum is σ = 93443189400. Its totient is φ = 30044867328.

The previous prime is 61187628871. The next prime is 61187628977. The reversal of 61187628946 is 64982678116.

It can be written as a sum of positive squares in 4 ways, for example, as 38982158721 + 22205470225 = 197439^2 + 149015^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217301 + ... + 1266568.

Almost surely, 2^61187628946 is an apocalyptic number.

61187628946 is a deficient number, since it is larger than the sum of its proper divisors (32255560454).

61187628946 is a wasteful number, since it uses less digits than its factorization.

61187628946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484093.

The product of its digits is 6967296, while the sum is 58.

The spelling of 61187628946 in words is "sixty-one billion, one hundred eighty-seven million, six hundred twenty-eight thousand, nine hundred forty-six".