20520102603115 has 16 divisors (see below), whose sum is σ = 25489181782080. Its totient is φ = 15840085242240.

The previous prime is 20520102603079. The next prime is 20520102603131. The reversal of 20520102603115 is 51130620102502.

It is not a de Polignac number, because 20520102603115 - 2³⁵ = 20485742864747 is a prime.

It is a super-2 number, since 2×20520102603115² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44075871 + ... + 44539000.

It is an arithmetic number, because the mean of its divisors is an integer number (1593073861380).

Almost surely, 2^{20520102603115} is an apocalyptic number.

20520102603115 is a deficient number, since it is larger than the sum of its proper divisors (4969079178965).

20520102603115 is a wasteful number, since it uses less digits than its factorization.

20520102603115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88616502.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 20520102603115 its reverse (51130620102502), we get a palindrome (71650722705617).

The spelling of 20520102603115 in words is "twenty trillion, five hundred twenty billion, one hundred two million, six hundred three thousand, one hundred fifteen".