215453220245403 has 32 divisors (see below), whose sum is σ = 334637097902592. Its totient is φ = 120754775116800.

The previous prime is 215453220245399. The next prime is 215453220245411. The reversal of 215453220245403 is 304542022354512.

It is not a de Polignac number, because 215453220245403 - 2² = 215453220245399 is a prime.

It is a super-2 number, since 2×215453220245403² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215453220245803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237779293 + ... + 238683678.

It is an arithmetic number, because the mean of its divisors is an integer number (10457409309456).

Almost surely, 2^{215453220245403} is an apocalyptic number.

215453220245403 is a deficient number, since it is larger than the sum of its proper divisors (119183877657189).

215453220245403 is a wasteful number, since it uses less digits than its factorization.

215453220245403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476463395.

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 215453220245403 its reverse (304542022354512), we get a palindrome (519995242599915).

The spelling of 215453220245403 in words is "two hundred fifteen trillion, four hundred fifty-three billion, two hundred twenty million, two hundred forty-five thousand, four hundred three".