245033026013721 has 16 divisors (see below), whose sum is σ = 356412141067968. Its totient is φ = 148504669723200.

The previous prime is 245033026013717. The next prime is 245033026013731. The reversal of 245033026013721 is 127310620330542.

It is a happy number.

It is not a de Polignac number, because 245033026013721 - 2² = 245033026013717 is a prime.

It is a super-3 number, since 3×245033026013721³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 245033026013721.

It is not an unprimeable number, because it can be changed into a prime (245033026013701) 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, 23113231 + ... + 32004491.

It is an arithmetic number, because the mean of its divisors is an integer number (22275758816748).

Almost surely, 2^{245033026013721} is an apocalyptic number.

It is an amenable number.

245033026013721 is a deficient number, since it is larger than the sum of its proper divisors (111379115054247).

245033026013721 is a wasteful number, since it uses less digits than its factorization.

245033026013721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9726392.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 245033026013721 in words is "two hundred forty-five trillion, thirty-three billion, twenty-six million, thirteen thousand, seven hundred twenty-one".