73453953418 has 12 divisors (see below), whose sum is σ = 111164650038. Its totient is φ = 36401946560.

The previous prime is 73453953409. The next prime is 73453953449. The reversal of 73453953418 is 81435935437.

It can be written as a sum of positive squares in 3 ways, for example, as 22830303409 + 50623650009 = 151097^2 + 224997^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1412593 + ... + 1463668.

Almost surely, 2^73453953418 is an apocalyptic number.

73453953418 is a deficient number, since it is larger than the sum of its proper divisors (37710696620).

73453953418 is a wasteful number, since it uses less digits than its factorization.

73453953418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876489 (or 2876376 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 52.

The spelling of 73453953418 in words is "seventy-three billion, four hundred fifty-three million, nine hundred fifty-three thousand, four hundred eighteen".