145747215492 has 48 divisors (see below), whose sum is σ = 346105267200. Its totient is φ = 47722460320.

The previous prime is 145747215469. The next prime is 145747215533. The reversal of 145747215492 is 294512747541.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855817 + ... + 1011887.

It is an arithmetic number, because the mean of its divisors is an integer number (7210526400).

Almost surely, 2^145747215492 is an apocalyptic number.

145747215492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145747215492 is an abundant number, since it is smaller than the sum of its proper divisors (200358051708).

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

145747215492 is a wasteful number, since it uses less digits than its factorization.

145747215492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157456 (or 157454 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 51.

The spelling of 145747215492 in words is "one hundred forty-five billion, seven hundred forty-seven million, two hundred fifteen thousand, four hundred ninety-two".