245155542124 has 12 divisors (see below), whose sum is σ = 429027026400. Its totient is φ = 122576391728.

The previous prime is 245155542119. The next prime is 245155542127. The reversal of 245155542124 is 421245551542.

It is a super-2 number, since 2×245155542124² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245155542127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126717 + ... + 711595.

It is an arithmetic number, because the mean of its divisors is an integer number (35752252200).

Almost surely, 2^245155542124 is an apocalyptic number.

It is an amenable number.

245155542124 is a deficient number, since it is larger than the sum of its proper divisors (183871484276).

245155542124 is a wasteful number, since it uses less digits than its factorization.

245155542124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689672 (or 689670 counting only the distinct ones).

The product of its digits is 320000, while the sum is 40.

The spelling of 245155542124 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred forty-two thousand, one hundred twenty-four".