51404294659 has 16 divisors (see below), whose sum is σ = 56054541312. Its totient is φ = 47003983488.

The previous prime is 51404294647. The next prime is 51404294671. The reversal of 51404294659 is 95649240415.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51404294647) and next prime (51404294671).

It is not a de Polignac number, because 51404294659 - 2¹³ = 51404286467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51404294609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506454 + ... + 599419.

It is an arithmetic number, because the mean of its divisors is an integer number (3503408832).

Almost surely, 2^51404294659 is an apocalyptic number.

51404294659 is a deficient number, since it is larger than the sum of its proper divisors (4650246653).

51404294659 is a wasteful number, since it uses less digits than its factorization.

51404294659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105986.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 51404294659 in words is "fifty-one billion, four hundred four million, two hundred ninety-four thousand, six hundred fifty-nine".