145417020666 has 16 divisors (see below), whose sum is σ = 291119464800. Its totient is φ = 48424769648.

The previous prime is 145417020629. The next prime is 145417020689. The reversal of 145417020666 is 666020714541.

It is a super-2 number, since 2×145417020666² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11886021 + ... + 11898248.

It is an arithmetic number, because the mean of its divisors is an integer number (18194966550).

Almost surely, 2^145417020666 is an apocalyptic number.

145417020666 is an abundant number, since it is smaller than the sum of its proper divisors (145702444134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145417020666 is a wasteful number, since it uses less digits than its factorization.

145417020666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23785293.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 145417020666 in words is "one hundred forty-five billion, four hundred seventeen million, twenty thousand, six hundred sixty-six".