15222434554545 has 32 divisors (see below), whose sum is σ = 24474798808704. Its totient is φ = 8079008179200.

The previous prime is 15222434554541. The next prime is 15222434554553. The reversal of 15222434554545 is 54545543422251.

It is not a de Polignac number, because 15222434554545 - 2² = 15222434554541 is a prime.

It is a super-4 number, since 4×15222434554545⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (15222434554541) 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, 22200259 + ... + 22875671.

It is an arithmetic number, because the mean of its divisors is an integer number (764837462772).

Almost surely, 2^{15222434554545} is an apocalyptic number.

15222434554545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15222434554545 is a deficient number, since it is larger than the sum of its proper divisors (9252364254159).

15222434554545 is a wasteful number, since it uses less digits than its factorization.

15222434554545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682753.

The product of its digits is 19200000, while the sum is 51.

Adding to 15222434554545 its reverse (54545543422251), we get a palindrome (69767977976796).

The spelling of 15222434554545 in words is "fifteen trillion, two hundred twenty-two billion, four hundred thirty-four million, five hundred fifty-four thousand, five hundred forty-five".