215432553412 has 6 divisors (see below), whose sum is σ = 377006968478. Its totient is φ = 107716276704.

The previous prime is 215432553409. The next prime is 215432553463. The reversal of 215432553412 is 214355234512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 214437529476 + 995023936 = 463074^2 + 31544^2 .

It is a super-2 number, since 2×215432553412² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26929069173 + ... + 26929069180.

Almost surely, 2^215432553412 is an apocalyptic number.

It is an amenable number.

215432553412 is a deficient number, since it is larger than the sum of its proper divisors (161574415066).

215432553412 is a wasteful number, since it uses less digits than its factorization.

215432553412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53858138357 (or 53858138355 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

Adding to 215432553412 its reverse (214355234512), we get a palindrome (429787787924).

The spelling of 215432553412 in words is "two hundred fifteen billion, four hundred thirty-two million, five hundred fifty-three thousand, four hundred twelve".