20148536815 has 16 divisors (see below), whose sum is σ = 26417333376. Its totient is φ = 14630666400.

The previous prime is 20148536803. The next prime is 20148536827. The reversal of 20148536815 is 51863584102.

It is an interprime number because it is at equal distance from previous prime (20148536803) and next prime (20148536827).

It is not a de Polignac number, because 20148536815 - 2⁵ = 20148536783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249501 + ... + 320230.

It is an arithmetic number, because the mean of its divisors is an integer number (1651083336).

Almost surely, 2^20148536815 is an apocalyptic number.

20148536815 is a deficient number, since it is larger than the sum of its proper divisors (6268796561).

20148536815 is a wasteful number, since it uses less digits than its factorization.

20148536815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570390.

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 20148536815 in words is "twenty billion, one hundred forty-eight million, five hundred thirty-six thousand, eight hundred fifteen".