15145187380 has 48 divisors (see below), whose sum is σ = 32744505024. Its totient is φ = 5880833280.

The previous prime is 15145187311. The next prime is 15145187401. The reversal of 15145187380 is 8378154151.

It is a super-2 number, since 2×15145187380² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

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, 86160 + ... + 194200.

It is an arithmetic number, because the mean of its divisors is an integer number (682177188).

Almost surely, 2^15145187380 is an apocalyptic number.

15145187380 is a gapful number since it is divisible by the number (10) 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 15145187380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16372252512).

15145187380 is an abundant number, since it is smaller than the sum of its proper divisors (17599317644).

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

15145187380 is a wasteful number, since it uses less digits than its factorization.

15145187380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108256 (or 108254 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 15145187380 in words is "fifteen billion, one hundred forty-five million, one hundred eighty-seven thousand, three hundred eighty".