351447734540 has 96 divisors (see below), whose sum is σ = 874849417344. Its totient is φ = 116078745600.

The previous prime is 351447734501. The next prime is 351447734549. The reversal of 351447734540 is 45437744153.

It is a super-2 number, since 2×351447734540² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (351447734549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187304 + ... + 859056.

It is an arithmetic number, because the mean of its divisors is an integer number (9113014764).

Almost surely, 2^351447734540 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 351447734540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437424708672).

351447734540 is an abundant number, since it is smaller than the sum of its proper divisors (523401682804).

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

351447734540 is a wasteful number, since it uses less digits than its factorization.

351447734540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671907 (or 671905 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 47.

The spelling of 351447734540 in words is "three hundred fifty-one billion, four hundred forty-seven million, seven hundred thirty-four thousand, five hundred forty".