61889000626 has 16 divisors (see below), whose sum is σ = 92928365208. Its totient is φ = 30912899200.

The previous prime is 61889000587. The next prime is 61889000647. The reversal of 61889000626 is 62600098816.

It is a Cunningham number, because it is equal to 248775²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 59031991225 + 2857009401 = 242965^2 + 53451^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11734326 + ... + 11739598.

Almost surely, 2^61889000626 is an apocalyptic number.

61889000626 is a deficient number, since it is larger than the sum of its proper divisors (31039364582).

61889000626 is a wasteful number, since it uses less digits than its factorization.

61889000626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 61889000626 in words is "sixty-one billion, eight hundred eighty-nine million, six hundred twenty-six", and thus it is an aban number.