228551377402 has 8 divisors (see below), whose sum is σ = 342992769300. Its totient is φ = 114220454304.

The previous prime is 228551377309. The next prime is 228551377409. The reversal of 228551377402 is 204773155822.

It can be written as a sum of positive squares in 2 ways, for example, as 213009017841 + 15542359561 = 461529^2 + 124669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×228551377402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228551377409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27612027 + ... + 27620302.

Almost surely, 2^228551377402 is an apocalyptic number.

228551377402 is a deficient number, since it is larger than the sum of its proper divisors (114441391898).

228551377402 is a wasteful number, since it uses less digits than its factorization.

228551377402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55234400.

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 228551377402 in words is "two hundred twenty-eight billion, five hundred fifty-one million, three hundred seventy-seven thousand, four hundred two".