145356621446 has 16 divisors (see below), whose sum is σ = 218769333840. Its totient is φ = 72433608480.

The previous prime is 145356621427. The next prime is 145356621451. The reversal of 145356621446 is 644126653541.

145356621446 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145356621446² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145356621446.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3313685 + ... + 3357263.

It is an arithmetic number, because the mean of its divisors is an integer number (13673083365).

Almost surely, 2^145356621446 is an apocalyptic number.

145356621446 is a deficient number, since it is larger than the sum of its proper divisors (73412712394).

145356621446 is a wasteful number, since it uses less digits than its factorization.

145356621446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49159.

The product of its digits is 2073600, while the sum is 47.

The spelling of 145356621446 in words is "one hundred forty-five billion, three hundred fifty-six million, six hundred twenty-one thousand, four hundred forty-six".