354720631145 has 16 divisors (see below), whose sum is σ = 437225608128. Its totient is φ = 276071250240.

The previous prime is 354720631121. The next prime is 354720631147. The reversal of 354720631145 is 541136027453.

It is a de Polignac number, because none of the positive numbers 2^k-354720631145 is a prime.

It is a super-2 number, since 2×354720631145² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354720631147) 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, 1362362 + ... + 1601708.

It is an arithmetic number, because the mean of its divisors is an integer number (27326600508).

Almost surely, 2^354720631145 is an apocalyptic number.

It is an amenable number.

354720631145 is a deficient number, since it is larger than the sum of its proper divisors (82504976983).

354720631145 is a wasteful number, since it uses less digits than its factorization.

354720631145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247400.

The product of its (nonzero) digits is 302400, while the sum is 41.

Adding to 354720631145 its reverse (541136027453), we get a palindrome (895856658598).

The spelling of 354720631145 in words is "three hundred fifty-four billion, seven hundred twenty million, six hundred thirty-one thousand, one hundred forty-five".