51299830454 has 4 divisors (see below), whose sum is σ = 76949745684. Its totient is φ = 25649915226.

The previous prime is 51299830451. The next prime is 51299830469. The reversal of 51299830454 is 45403899215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45403899215 = 5 ⋅9080779843.

It is a super-2 number, since 2×51299830454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51299830451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12824957612 + ... + 12824957615.

It is an arithmetic number, because the mean of its divisors is an integer number (19237436421).

Almost surely, 2^51299830454 is an apocalyptic number.

51299830454 is a deficient number, since it is larger than the sum of its proper divisors (25649915230).

51299830454 is a wasteful number, since it uses less digits than its factorization.

51299830454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25649915229.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 51299830454 in words is "fifty-one billion, two hundred ninety-nine million, eight hundred thirty thousand, four hundred fifty-four".