145263771820 has 48 divisors (see below), whose sum is σ = 315726012000. Its totient is φ = 56074672640.

The previous prime is 145263771811. The next prime is 145263771827. The reversal of 145263771820 is 28177362541.

145263771820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145263771820² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145263771827) 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, 1157760 + ... + 1277080.

It is an arithmetic number, because the mean of its divisors is an integer number (6577625250).

Almost surely, 2^145263771820 is an apocalyptic number.

145263771820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145263771820 is an abundant number, since it is smaller than the sum of its proper divisors (170462240180).

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

145263771820 is a wasteful number, since it uses less digits than its factorization.

145263771820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121458 (or 121456 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 145263771820 in words is "one hundred forty-five billion, two hundred sixty-three million, seven hundred seventy-one thousand, eight hundred twenty".