73478400686 has 16 divisors (see below), whose sum is σ = 110914943328. Its totient is φ = 36507187200.

The previous prime is 73478400683. The next prime is 73478400703. The reversal of 73478400686 is 68600487437.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73478400683) 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, 232031 + ... + 448101.

It is an arithmetic number, because the mean of its divisors is an integer number (6932183958).

Almost surely, 2^73478400686 is an apocalyptic number.

73478400686 is a deficient number, since it is larger than the sum of its proper divisors (37436542642).

73478400686 is a wasteful number, since it uses less digits than its factorization.

73478400686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217147.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 73478400686 in words is "seventy-three billion, four hundred seventy-eight million, four hundred thousand, six hundred eighty-six".