245155520415 has 64 divisors (see below), whose sum is σ = 437828912640. Its totient is φ = 116305943040.

The previous prime is 245155520411. The next prime is 245155520429. The reversal of 245155520415 is 514025551542.

It is a happy number.

It is not a de Polignac number, because 245155520415 - 2² = 245155520411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245155520411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2916120 + ... + 2999010.

It is an arithmetic number, because the mean of its divisors is an integer number (6841076760).

Almost surely, 2^245155520415 is an apocalyptic number.

245155520415 is a deficient number, since it is larger than the sum of its proper divisors (192673392225).

245155520415 is a wasteful number, since it uses less digits than its factorization.

245155520415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83464.

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 245155520415 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred twenty thousand, four hundred fifteen".