1551904468993 has 8 divisors (see below), whose sum is σ = 1571618844800. Its totient is φ = 1532191843728.

The previous prime is 1551904468991. The next prime is 1551904468997. The reversal of 1551904468993 is 3998644091551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1551904468993 - 2¹ = 1551904468991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551904468991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395118 + ... + 2247256.

It is an arithmetic number, because the mean of its divisors is an integer number (196452355600).

Almost surely, 2^{1551904468993} is an apocalyptic number.

It is an amenable number.

1551904468993 is a deficient number, since it is larger than the sum of its proper divisors (19714375807).

1551904468993 is an equidigital number, since it uses as much as digits as its factorization.

1551904468993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875271.

The product of its (nonzero) digits is 41990400, while the sum is 64.

The spelling of 1551904468993 in words is "one trillion, five hundred fifty-one billion, nine hundred four million, four hundred sixty-eight thousand, nine hundred ninety-three".