2153642040506 has 32 divisors (see below), whose sum is σ = 3594435440256. Its totient is φ = 959561512000.

The previous prime is 2153642040491. The next prime is 2153642040523. The reversal of 2153642040506 is 6050402463512.

It is a self number, because there is not a number n which added to its sum of digits gives 2153642040506.

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, 3714665 + ... + 4255116.

It is an arithmetic number, because the mean of its divisors is an integer number (112326107508).

Almost surely, 2^{2153642040506} is an apocalyptic number.

2153642040506 is a deficient number, since it is larger than the sum of its proper divisors (1440793399750).

2153642040506 is a wasteful number, since it uses less digits than its factorization.

2153642040506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970038.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 2153642040506 in words is "two trillion, one hundred fifty-three billion, six hundred forty-two million, forty thousand, five hundred six".