73775001840 has 80 divisors (see below), whose sum is σ = 232578864000. Its totient is φ = 19339883776.

The previous prime is 73775001803. The next prime is 73775001841. The reversal of 73775001840 is 4810057737.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 73775001792 and 73775001801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73775001841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590890 + ... + 2619209.

It is an arithmetic number, because the mean of its divisors is an integer number (2907235800).

Almost surely, 2^73775001840 is an apocalyptic number.

It is an amenable number.

73775001840 is an abundant number, since it is smaller than the sum of its proper divisors (158803862160).

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

73775001840 is a wasteful number, since it uses less digits than its factorization.

73775001840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210174 (or 5210168 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 73775001840 in words is "seventy-three billion, seven hundred seventy-five million, one thousand, eight hundred forty".