672277778450 has 24 divisors (see below), whose sum is σ = 1290773337600. Its totient is φ = 260236558800.

The previous prime is 672277778437. The next prime is 672277778477. The reversal of 672277778450 is 54877772276.

It is a super-2 number, since 2×672277778450² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216862250 + ... + 216865349.

It is an arithmetic number, because the mean of its divisors is an integer number (53782222400).

Almost surely, 2^672277778450 is an apocalyptic number.

672277778450 is a deficient number, since it is larger than the sum of its proper divisors (618495559150).

672277778450 is a wasteful number, since it uses less digits than its factorization.

672277778450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433727642 (or 433727637 counting only the distinct ones).

The product of its (nonzero) digits is 64538880, while the sum is 62.

The spelling of 672277778450 in words is "six hundred seventy-two billion, two hundred seventy-seven million, seven hundred seventy-eight thousand, four hundred fifty".