20445356701 has 16 divisors (see below), whose sum is σ = 25776731520. Its totient is φ = 15752436480.

The previous prime is 20445356653. The next prime is 20445356761. The reversal of 20445356701 is 10765354402.

It is not a de Polignac number, because 20445356701 - 2¹⁷ = 20445225629 is a prime.

It is a super-2 number, since 2×20445356701² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445356761) 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, 1484856 + ... + 1498561.

It is an arithmetic number, because the mean of its divisors is an integer number (1611045720).

Almost surely, 2^20445356701 is an apocalyptic number.

It is an amenable number.

20445356701 is a deficient number, since it is larger than the sum of its proper divisors (5331374819).

20445356701 is a wasteful number, since it uses less digits than its factorization.

20445356701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983524.

The product of its (nonzero) digits is 100800, while the sum is 37.

It can be divided in two parts, 20445 and 356701, that added together give a triangular number (377146 = T₈₆₈).

The spelling of 20445356701 in words is "twenty billion, four hundred forty-five million, three hundred fifty-six thousand, seven hundred one".