145621022402 has 24 divisors (see below), whose sum is σ = 222057992700. Its totient is φ = 71618141280.

The previous prime is 145621022389. The next prime is 145621022461. The reversal of 145621022402 is 204220126541.

145621022402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 114344746201 + 31276276201 = 338149^2 + 176851^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3138452 + ... + 3184512.

Almost surely, 2^145621022402 is an apocalyptic number.

145621022402 is a deficient number, since it is larger than the sum of its proper divisors (76436970298).

145621022402 is a wasteful number, since it uses less digits than its factorization.

145621022402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46418 (or 46315 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 145621022402 its reverse (204220126541), we get a palindrome (349841148943).

The spelling of 145621022402 in words is "one hundred forty-five billion, six hundred twenty-one million, twenty-two thousand, four hundred two".