351873786781 has 8 divisors (see below), whose sum is σ = 383869008000. Its totient is φ = 319879681440.

The previous prime is 351873786773. The next prime is 351873786857. The reversal of 351873786781 is 187687378153.

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

It is not a de Polignac number, because 351873786781 - 2³ = 351873786773 is a prime.

It is a super-2 number, since 2×351873786781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351873786281) 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, 467145 + ... + 960193.

It is an arithmetic number, because the mean of its divisors is an integer number (47983626000).

Almost surely, 2^351873786781 is an apocalyptic number.

It is an amenable number.

351873786781 is a deficient number, since it is larger than the sum of its proper divisors (31995221219).

351873786781 is a wasteful number, since it uses less digits than its factorization.

351873786781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557939.

The product of its digits is 47416320, while the sum is 64.

The spelling of 351873786781 in words is "three hundred fifty-one billion, eight hundred seventy-three million, seven hundred eighty-six thousand, seven hundred eighty-one".