245567641623 has 16 divisors (see below), whose sum is σ = 350306448000. Its totient is φ = 152552803680.

The previous prime is 245567641621. The next prime is 245567641651. The reversal of 245567641623 is 326146765542.

It is not a de Polignac number, because 245567641623 - 2¹ = 245567641621 is a prime.

It is a super-2 number, since 2×245567641623² (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 (245567641621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35309673 + ... + 35316626.

It is an arithmetic number, because the mean of its divisors is an integer number (21894153000).

Almost surely, 2^245567641623 is an apocalyptic number.

245567641623 is a deficient number, since it is larger than the sum of its proper divisors (104738806377).

245567641623 is a wasteful number, since it uses less digits than its factorization.

245567641623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70626382.

The product of its digits is 7257600, while the sum is 51.

The spelling of 245567641623 in words is "two hundred forty-five billion, five hundred sixty-seven million, six hundred forty-one thousand, six hundred twenty-three".