2051513010451 has 4 divisors (see below), whose sum is σ = 2051604045504. Its totient is φ = 2051421975400.

The previous prime is 2051513010439. The next prime is 2051513010467. The reversal of 2051513010451 is 1540103151502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2051513010451 - 2⁹ = 2051513009939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051513010551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45483715 + ... + 45528796.

It is an arithmetic number, because the mean of its divisors is an integer number (512901011376).

Almost surely, 2^{2051513010451} is an apocalyptic number.

2051513010451 is a deficient number, since it is larger than the sum of its proper divisors (91035053).

2051513010451 is an equidigital number, since it uses as much as digits as its factorization.

2051513010451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91035052.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 2051513010451 its reverse (1540103151502), we get a palindrome (3591616161953).

The spelling of 2051513010451 in words is "two trillion, fifty-one billion, five hundred thirteen million, ten thousand, four hundred fifty-one".