20072520699 has 16 divisors (see below), whose sum is σ = 33367307520. Its totient is φ = 10427283360.

The previous prime is 20072520659. The next prime is 20072520709. The reversal of 20072520699 is 99602527002.

It is not a de Polignac number, because 20072520699 - 2¹² = 20072516603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20072520699.

It is not an unprimeable number, because it can be changed into a prime (20072520649) 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, 43446784 + ... + 43447245.

It is an arithmetic number, because the mean of its divisors is an integer number (2085456720).

Almost surely, 2^20072520699 is an apocalyptic number.

20072520699 is a deficient number, since it is larger than the sum of its proper divisors (13294786821).

20072520699 is a wasteful number, since it uses less digits than its factorization.

20072520699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86894050.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 20072520699 in words is "twenty billion, seventy-two million, five hundred twenty thousand, six hundred ninety-nine".