15145514240 has 36 divisors (see below), whose sum is σ = 36278242644. Its totient is φ = 6058205184.

The previous prime is 15145514221. The next prime is 15145514243. The reversal of 15145514240 is 4241554151.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9026520064 + 6118994176 = 95008^2 + 78224^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 15145514197 and 15145514206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15145514243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5914937 + ... + 5917496.

Almost surely, 2^15145514240 is an apocalyptic number.

15145514240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15145514240 is an abundant number, since it is smaller than the sum of its proper divisors (21132728404).

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

15145514240 is an equidigital number, since it uses as much as digits as its factorization.

15145514240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11832454 (or 11832440 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 15145514240 in words is "fifteen billion, one hundred forty-five million, five hundred fourteen thousand, two hundred forty".