249492172000 has 48 divisors (see below), whose sum is σ = 613002276432. Its totient is φ = 99796867200.

The previous prime is 249492171953. The next prime is 249492172009. The reversal of 249492172000 is 271294942.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249492172009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31182522 + ... + 31190521.

It is an arithmetic number, because the mean of its divisors is an integer number (12770880759).

Almost surely, 2^249492172000 is an apocalyptic number.

249492172000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249492172000 is an abundant number, since it is smaller than the sum of its proper divisors (363510104432).

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

249492172000 is an equidigital number, since it uses as much as digits as its factorization.

249492172000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62373068 (or 62373050 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 249492172000 in words is "two hundred forty-nine billion, four hundred ninety-two million, one hundred seventy-two thousand".