1215514440153 has 60 divisors (see below), whose sum is σ = 1989878037840. Its totient is φ = 738996040224.

The previous prime is 1215514440139. The next prime is 1215514440163. The reversal of 1215514440153 is 3510444155121.

1215514440153 is a `hidden beast` number, since 1 + 2 + 1 + 55 + 14 + 440 + 153 = 666.

It is not a de Polignac number, because 1215514440153 - 2⁸ = 1215514439897 is a prime.

It is a super-2 number, since 2×1215514440153² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1215514440163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 601278 + ... + 1671096.

It is an arithmetic number, because the mean of its divisors is an integer number (33164633964).

Almost surely, 2^{1215514440153} is an apocalyptic number.

1215514440153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1215514440153 is a deficient number, since it is larger than the sum of its proper divisors (774363597687).

1215514440153 is a wasteful number, since it uses less digits than its factorization.

1215514440153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069940 (or 1069918 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 1215514440153 its reverse (3510444155121), we get a palindrome (4725958595274).

The spelling of 1215514440153 in words is "one trillion, two hundred fifteen billion, five hundred fourteen million, four hundred forty thousand, one hundred fifty-three".