145216251660 has 48 divisors (see below), whose sum is σ = 407064059136. Its totient is φ = 38680661952.

The previous prime is 145216251641. The next prime is 145216251707. The reversal of 145216251660 is 66152612541.

It is a super-4 number, since 4×145216251660⁴ (a number of 46 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1311082 + ... + 1417521.

It is an arithmetic number, because the mean of its divisors is an integer number (8480501232).

Almost surely, 2^145216251660 is an apocalyptic number.

145216251660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145216251660 is an abundant number, since it is smaller than the sum of its proper divisors (261847807476).

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

145216251660 is a wasteful number, since it uses less digits than its factorization.

145216251660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729502 (or 2729500 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 145216251660 in words is "one hundred forty-five billion, two hundred sixteen million, two hundred fifty-one thousand, six hundred sixty".