20357045745 has 16 divisors (see below), whose sum is σ = 33621960192. Its totient is φ = 10506862080.

The previous prime is 20357045729. The next prime is 20357045749. The reversal of 20357045745 is 54754075302.

It is not a de Polignac number, because 20357045745 - 2⁴ = 20357045729 is a prime.

It is a super-2 number, since 2×20357045745² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20357045697 and 20357045706.

It is not an unprimeable number, because it can be changed into a prime (20357045749) 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, 21888832 + ... + 21889761.

It is an arithmetic number, because the mean of its divisors is an integer number (2101372512).

Almost surely, 2^20357045745 is an apocalyptic number.

It is an amenable number.

20357045745 is a deficient number, since it is larger than the sum of its proper divisors (13264914447).

20357045745 is a wasteful number, since it uses less digits than its factorization.

20357045745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43778632.

The product of its (nonzero) digits is 588000, while the sum is 42.

The spelling of 20357045745 in words is "twenty billion, three hundred fifty-seven million, forty-five thousand, seven hundred forty-five".