149249381456 has 160 divisors (see below), whose sum is σ = 356610508800. Its totient is φ = 60388070400.

The previous prime is 149249381453. The next prime is 149249381467. The reversal of 149249381456 is 654183942941.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149249381453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6964550 + ... + 6985946.

It is an arithmetic number, because the mean of its divisors is an integer number (2228815680).

Almost surely, 2^149249381456 is an apocalyptic number.

149249381456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149249381456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178305254400).

149249381456 is an abundant number, since it is smaller than the sum of its proper divisors (207361127344).

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

149249381456 is a wasteful number, since it uses less digits than its factorization.

149249381456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21498 (or 21478 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 56.

The spelling of 149249381456 in words is "one hundred forty-nine billion, two hundred forty-nine million, three hundred eighty-one thousand, four hundred fifty-six".