61443955737602 has 64 divisors (see below), whose sum is σ = 98837979926400. Its totient is φ = 28546045056000.

The previous prime is 61443955737599. The next prime is 61443955737607. The reversal of 61443955737602 is 20673755934416.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61443955737607) 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 31 ways as a sum of consecutive naturals, for example, 1778441024 + ... + 1778475572.

It is an arithmetic number, because the mean of its divisors is an integer number (1544343436350).

Almost surely, 2^{61443955737602} is an apocalyptic number.

61443955737602 is a deficient number, since it is larger than the sum of its proper divisors (37394024188798).

61443955737602 is a wasteful number, since it uses less digits than its factorization.

61443955737602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36147.

The product of its (nonzero) digits is 114307200, while the sum is 62.

The spelling of 61443955737602 in words is "sixty-one trillion, four hundred forty-three billion, nine hundred fifty-five million, seven hundred thirty-seven thousand, six hundred two".