351216136040 has 128 divisors (see below), whose sum is σ = 988055712000. Its totient is φ = 109155962880.

The previous prime is 351216136039. The next prime is 351216136057. The reversal of 351216136040 is 40631612153.

It is a junction number, because it is equal to n+sod(n) for n = 351216135988 and 351216136006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 911552 + ... + 1238288.

It is an arithmetic number, because the mean of its divisors is an integer number (7719185250).

Almost surely, 2^351216136040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351216136040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494027856000).

351216136040 is an abundant number, since it is smaller than the sum of its proper divisors (636839575960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351216136040 is a wasteful number, since it uses less digits than its factorization.

351216136040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327115 (or 327111 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 351216136040 its reverse (40631612153), we get a palindrome (391847748193).

The spelling of 351216136040 in words is "three hundred fifty-one billion, two hundred sixteen million, one hundred thirty-six thousand, forty".