73666372013576 has 8 divisors (see below), whose sum is σ = 138124447525470. Its totient is φ = 36833186006784.

The previous prime is 73666372013569. The next prime is 73666372013587. The reversal of 73666372013576 is 67531027366637.

It can be written as a sum of positive squares in only one way, i.e., 57857716493476 + 15808655520100 = 7606426^2 + 3976010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4604148250841 + ... + 4604148250856.

Almost surely, 2^{73666372013576} is an apocalyptic number.

It is an amenable number.

73666372013576 is a deficient number, since it is larger than the sum of its proper divisors (64458075511894).

73666372013576 is a wasteful number, since it uses less digits than its factorization.

73666372013576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9208296501703 (or 9208296501699 counting only the distinct ones).

The product of its (nonzero) digits is 120022560, while the sum is 62.

The spelling of 73666372013576 in words is "seventy-three trillion, six hundred sixty-six billion, three hundred seventy-two million, thirteen thousand, five hundred seventy-six".