73987493481 has 12 divisors (see below), whose sum is σ = 116586353520. Its totient is φ = 44840905080.

The previous prime is 73987493477. The next prime is 73987493507. The reversal of 73987493481 is 18439478937.

73987493481 is a `hidden beast` number, since 7 + 39 + 87 + 49 + 3 + 481 = 666.

It is not a de Polignac number, because 73987493481 - 2² = 73987493477 is a prime.

It is a super-2 number, since 2×73987493481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73987493981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373674111 + ... + 373674308.

It is an arithmetic number, because the mean of its divisors is an integer number (9715529460).

Almost surely, 2^73987493481 is an apocalyptic number.

It is an amenable number.

73987493481 is a deficient number, since it is larger than the sum of its proper divisors (42598860039).

73987493481 is a wasteful number, since it uses less digits than its factorization.

73987493481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747348436 (or 747348433 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 73987493481 in words is "seventy-three billion, nine hundred eighty-seven million, four hundred ninety-three thousand, four hundred eighty-one".