20245408770629 has 16 divisors (see below), whose sum is σ = 23908735859328. Its totient is φ = 16780617813312.

The previous prime is 20245408770571. The next prime is 20245408770677. The reversal of 20245408770629 is 92607780454202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20245408770629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245408770529) 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, 239735702 + ... + 239820135.

It is an arithmetic number, because the mean of its divisors is an integer number (1494295991208).

Almost surely, 2^{20245408770629} is an apocalyptic number.

It is an amenable number.

20245408770629 is a deficient number, since it is larger than the sum of its proper divisors (3663327088699).

20245408770629 is a wasteful number, since it uses less digits than its factorization.

20245408770629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479556044.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 20245408770629 in words is "twenty trillion, two hundred forty-five billion, four hundred eight million, seven hundred seventy thousand, six hundred twenty-nine".