61015101250 has 20 divisors (see below), whose sum is σ = 114366708126. Its totient is φ = 24406040000.

The previous prime is 61015101197. The next prime is 61015101269. The reversal of 61015101250 is 5210151016.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 9817440889 + 51197660361 = 99083^2 + 226269^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24404791 + ... + 24407290.

Almost surely, 2^61015101250 is an apocalyptic number.

61015101250 is a deficient number, since it is larger than the sum of its proper divisors (53351606876).

61015101250 is an equidigital number, since it uses as much as digits as its factorization.

61015101250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48812103 (or 48812088 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 61015101250 its reverse (5210151016), we get a palindrome (66225252266).

The spelling of 61015101250 in words is "sixty-one billion, fifteen million, one hundred one thousand, two hundred fifty".