145416505494 has 64 divisors (see below), whose sum is σ = 319978036224. Its totient is φ = 43776585216.

The previous prime is 145416505483. The next prime is 145416505523. The reversal of 145416505494 is 494505614541.

It is a super-2 number, since 2×145416505494² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15660177 + ... + 15669459.

It is an arithmetic number, because the mean of its divisors is an integer number (4999656816).

Almost surely, 2^145416505494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145416505494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159989018112).

145416505494 is an abundant number, since it is smaller than the sum of its proper divisors (174561530730).

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

145416505494 is a wasteful number, since it uses less digits than its factorization.

145416505494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13621.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 145416505494 in words is "one hundred forty-five billion, four hundred sixteen million, five hundred five thousand, four hundred ninety-four".