145779947970 has 16 divisors (see below), whose sum is σ = 349871875200. Its totient is φ = 38874652784.

The previous prime is 145779947939. The next prime is 145779948073. The reversal of 145779947970 is 79749977541.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145779947895 and 145779947904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2429665770 + ... + 2429665829.

It is an arithmetic number, because the mean of its divisors is an integer number (21866992200).

Almost surely, 2^145779947970 is an apocalyptic number.

145779947970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145779947970 is an abundant number, since it is smaller than the sum of its proper divisors (204091927230).

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

145779947970 is a wasteful number, since it uses less digits than its factorization.

145779947970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859331609.

The product of its (nonzero) digits is 140026320, while the sum is 69.

The spelling of 145779947970 in words is "one hundred forty-five billion, seven hundred seventy-nine million, nine hundred forty-seven thousand, nine hundred seventy".