245356402541 has 4 divisors (see below), whose sum is σ = 251340705084. Its totient is φ = 239372100000.

The previous prime is 245356402493. The next prime is 245356402547. The reversal of 245356402541 is 145204653542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116022665641 + 129333736900 = 340621^2 + 359630^2 .

It is a cyclic number.

It is not a de Polignac number, because 245356402541 - 2²² = 245352208237 is a prime.

It is a super-2 number, since 2×245356402541² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 5984302501 = 245356402541 / (2 + 4 + 5 + 3 + 5 + 6 + 4 + 0 + 2 + 5 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245356402547) 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, 2992151210 + ... + 2992151291.

It is an arithmetic number, because the mean of its divisors is an integer number (62835176271).

Almost surely, 2^245356402541 is an apocalyptic number.

It is an amenable number.

245356402541 is a deficient number, since it is larger than the sum of its proper divisors (5984302543).

245356402541 is an equidigital number, since it uses as much as digits as its factorization.

245356402541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5984302542.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 245356402541 in words is "two hundred forty-five billion, three hundred fifty-six million, four hundred two thousand, five hundred forty-one".