20737521035 has 40 divisors (see below), whose sum is σ = 31670167536. Its totient is φ = 12927203520.

The previous prime is 20737521029. The next prime is 20737521037. The reversal of 20737521035 is 53012573702.

It is a de Polignac number, because none of the positive numbers 2^k-20737521035 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 20737520986 and 20737521004.

It is not an unprimeable number, because it can be changed into a prime (20737521037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53537 + ... + 210573.

Almost surely, 2^20737521035 is an apocalyptic number.

20737521035 is a deficient number, since it is larger than the sum of its proper divisors (10932646501).

20737521035 is an equidigital number, since it uses as much as digits as its factorization.

20737521035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157081 (or 157060 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 35.

The spelling of 20737521035 in words is "twenty billion, seven hundred thirty-seven million, five hundred twenty-one thousand, thirty-five".