545215123502 has 8 divisors (see below), whose sum is σ = 934654497456. Its totient is φ = 233663624352.

The previous prime is 545215123469. The next prime is 545215123507. The reversal of 545215123502 is 205321512545.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×545215123502² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545215123507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19471968683 + ... + 19471968710.

It is an arithmetic number, because the mean of its divisors is an integer number (116831812182).

Almost surely, 2^545215123502 is an apocalyptic number.

545215123502 is a deficient number, since it is larger than the sum of its proper divisors (389439373954).

545215123502 is a wasteful number, since it uses less digits than its factorization.

545215123502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38943937402.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 545215123502 in words is "five hundred forty-five billion, two hundred fifteen million, one hundred twenty-three thousand, five hundred two".