145222665826 has 24 divisors (see below), whose sum is σ = 253509924096. Its totient is φ = 62210975400.

The previous prime is 145222665793. The next prime is 145222665871. The reversal of 145222665826 is 628566222541.

It is a super-2 number, since 2×145222665826² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 145222665826.

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, 99850 + ... + 548101.

It is an arithmetic number, because the mean of its divisors is an integer number (10562913504).

Almost surely, 2^145222665826 is an apocalyptic number.

145222665826 is a deficient number, since it is larger than the sum of its proper divisors (108287258270).

145222665826 is a wasteful number, since it uses less digits than its factorization.

145222665826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650254 (or 650247 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 49.

The spelling of 145222665826 in words is "one hundred forty-five billion, two hundred twenty-two million, six hundred sixty-five thousand, eight hundred twenty-six".