245115217545 has 32 divisors (see below), whose sum is σ = 427875364224. Its totient is φ = 118833216000.

The previous prime is 245115217481. The next prime is 245115217601. The reversal of 245115217545 is 545712511542.

It is a happy number.

It is not a de Polignac number, because 245115217545 - 2⁶ = 245115217481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245115217497 and 245115217506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1998495 + ... + 2117595.

It is an arithmetic number, because the mean of its divisors is an integer number (13371105132).

Almost surely, 2^245115217545 is an apocalyptic number.

It is an amenable number.

245115217545 is a deficient number, since it is larger than the sum of its proper divisors (182760146679).

245115217545 is a wasteful number, since it uses less digits than its factorization.

245115217545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131593.

The product of its digits is 280000, while the sum is 42.

The spelling of 245115217545 in words is "two hundred forty-five billion, one hundred fifteen million, two hundred seventeen thousand, five hundred forty-five".