145170942621 has 16 divisors (see below), whose sum is σ = 206304490368. Its totient is φ = 90484416000.

The previous prime is 145170942601. The next prime is 145170942641. The reversal of 145170942621 is 126249071541.

It is an interprime number because it is at equal distance from previous prime (145170942601) and next prime (145170942641).

It is not a de Polignac number, because 145170942621 - 2⁵ = 145170942589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145170942601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9417760 + ... + 9433161.

It is an arithmetic number, because the mean of its divisors is an integer number (12894030648).

Almost surely, 2^145170942621 is an apocalyptic number.

It is an amenable number.

145170942621 is a deficient number, since it is larger than the sum of its proper divisors (61133547747).

145170942621 is a wasteful number, since it uses less digits than its factorization.

145170942621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18851092.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 145170942621 in words is "one hundred forty-five billion, one hundred seventy million, nine hundred forty-two thousand, six hundred twenty-one".