73201813815487 has 8 divisors (see below), whose sum is σ = 85366546724000. Its totient is φ = 62744411841552.

The previous prime is 73201813815437. The next prime is 73201813815491. The reversal of 73201813815487 is 78451831810237.

It is a happy number.

It is not a de Polignac number, because 73201813815487 - 2¹¹ = 73201813813439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73201813815437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106708183062 + ... + 106708183747.

It is an arithmetic number, because the mean of its divisors is an integer number (10670818340500).

Almost surely, 2^{73201813815487} is an apocalyptic number.

73201813815487 is a deficient number, since it is larger than the sum of its proper divisors (12164732908513).

73201813815487 is an equidigital number, since it uses as much as digits as its factorization.

73201813815487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213416366830 (or 213416366816 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 73201813815487 in words is "seventy-three trillion, two hundred one billion, eight hundred thirteen million, eight hundred fifteen thousand, four hundred eighty-seven".