61501024036 has 9 divisors (see below), whose sum is σ = 107627660049. Its totient is φ = 30750264024.

The previous prime is 61501024033. The next prime is 61501024037. The reversal of 61501024036 is 63042010516.

The square root of 61501024036 is 247994.

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

It can be written as a sum of positive squares in only one way, i.e., 12014352100 + 49486671936 = 109610^2 + 222456^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61501023995 and 61501024013.

It is not an unprimeable number, because it can be changed into a prime (61501024033) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 433990 + ... + 557986.

Almost surely, 2^61501024036 is an apocalyptic number.

61501024036 is the 247994-th square number.

It is an amenable number.

61501024036 is a deficient number, since it is larger than the sum of its proper divisors (46126636013).

61501024036 is an frugal number, since it uses more digits than its factorization.

61501024036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247998 (or 123999 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 61501024036 in words is "sixty-one billion, five hundred one million, twenty-four thousand, thirty-six".