2151520230412 has 48 divisors (see below), whose sum is σ = 4490523620352. Its totient is φ = 881912180160.

The previous prime is 2151520230383. The next prime is 2151520230439. The reversal of 2151520230412 is 2140320251512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 7498962 + ... + 7780582.

It is an arithmetic number, because the mean of its divisors is an integer number (93552575424).

Almost surely, 2^{2151520230412} is an apocalyptic number.

It is an amenable number.

2151520230412 is an abundant number, since it is smaller than the sum of its proper divisors (2339003389940).

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

2151520230412 is a wasteful number, since it uses less digits than its factorization.

2151520230412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293518 (or 293516 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 2151520230412 its reverse (2140320251512), we get a palindrome (4291840481924).

The spelling of 2151520230412 in words is "two trillion, one hundred fifty-one billion, five hundred twenty million, two hundred thirty thousand, four hundred twelve".