15040442212 has 6 divisors (see below), whose sum is σ = 26320773878. Its totient is φ = 7520221104.

The previous prime is 15040442189. The next prime is 15040442239. The reversal of 15040442212 is 21224404051.

It can be written as a sum of positive squares in only one way, i.e., 14521696036 + 518746176 = 120506^2 + 22776^2 .

It is a super-2 number, since 2×15040442212² (a number of 21 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, 1880055273 + ... + 1880055280.

Almost surely, 2^15040442212 is an apocalyptic number.

It is an amenable number.

15040442212 is a deficient number, since it is larger than the sum of its proper divisors (11280331666).

15040442212 is a wasteful number, since it uses less digits than its factorization.

15040442212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760110557 (or 3760110555 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 15040442212 its reverse (21224404051), we get a palindrome (36264846263).

The spelling of 15040442212 in words is "fifteen billion, forty million, four hundred forty-two thousand, two hundred twelve".