61645542036150 has 24 divisors (see below), whose sum is σ = 152880944250024. Its totient is φ = 16438811209600.

The previous prime is 61645542036149. The next prime is 61645542036161. The reversal of 61645542036150 is 5163024554616.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61645542036150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205485139971 + ... + 205485140270.

It is an arithmetic number, because the mean of its divisors is an integer number (6370039343751).

Almost surely, 2^{61645542036150} is an apocalyptic number.

61645542036150 is an abundant number, since it is smaller than the sum of its proper divisors (91235402213874).

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

61645542036150 is a wasteful number, since it uses less digits than its factorization.

61645542036150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410970280256 (or 410970280251 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 61645542036150 in words is "sixty-one trillion, six hundred forty-five billion, five hundred forty-two million, thirty-six thousand, one hundred fifty".