145858861619 has 16 divisors (see below), whose sum is σ = 149244989376. Its totient is φ = 142506086400.

The previous prime is 145858861613. The next prime is 145858861633. The reversal of 145858861619 is 916168858541.

It is a cyclic number.

It is not a de Polignac number, because 145858861619 - 2²⁰ = 145857813043 is a prime.

It is a super-2 number, since 2×145858861619² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145858861613) 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, 16875539 + ... + 16884179.

It is an arithmetic number, because the mean of its divisors is an integer number (9327811836).

Almost surely, 2^145858861619 is an apocalyptic number.

145858861619 is a deficient number, since it is larger than the sum of its proper divisors (3386127757).

145858861619 is a wasteful number, since it uses less digits than its factorization.

145858861619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526.

The product of its digits is 16588800, while the sum is 62.

The spelling of 145858861619 in words is "one hundred forty-five billion, eight hundred fifty-eight million, eight hundred sixty-one thousand, six hundred nineteen".