15720377212 has 12 divisors (see below), whose sum is σ = 27612177376. Its totient is φ = 7831183680.

The previous prime is 15720377143. The next prime is 15720377219. The reversal of 15720377212 is 21277302751.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15720377219) 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, 7250013 + ... + 7252180.

Almost surely, 2^15720377212 is an apocalyptic number.

It is an amenable number.

15720377212 is a deficient number, since it is larger than the sum of its proper divisors (11891800164).

15720377212 is a wasteful number, since it uses less digits than its factorization.

15720377212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14502468 (or 14502466 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 37.

Adding to 15720377212 its reverse (21277302751), we get a palindrome (36997679963).

The spelling of 15720377212 in words is "fifteen billion, seven hundred twenty million, three hundred seventy-seven thousand, two hundred twelve".