145091801616 has 20 divisors (see below), whose sum is σ = 374820487632. Its totient is φ = 48363933856.

The previous prime is 145091801599. The next prime is 145091801627. The reversal of 145091801616 is 616108190541.

It is a happy number.

It is a super-2 number, since 2×145091801616² (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 3 ways as a sum of consecutive naturals, for example, 1511372886 + ... + 1511372981.

Almost surely, 2^145091801616 is an apocalyptic number.

145091801616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145091801616 is an abundant number, since it is smaller than the sum of its proper divisors (229728686016).

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

145091801616 is a wasteful number, since it uses less digits than its factorization.

145091801616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022745878 (or 3022745872 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 145091801616 in words is "one hundred forty-five billion, ninety-one million, eight hundred one thousand, six hundred sixteen".