735128631381 has 16 divisors (see below), whose sum is σ = 1031795000000. Its totient is φ = 464275784448.

The previous prime is 735128631371. The next prime is 735128631421. The reversal of 735128631381 is 183136821537.

It is a de Polignac number, because none of the positive numbers 2^k-735128631381 is a prime.

It is a super-2 number, since 2×735128631381² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 735128631381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (735128631301) 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, 1574835 + ... + 1987551.

It is an arithmetic number, because the mean of its divisors is an integer number (64487187500).

Almost surely, 2^735128631381 is an apocalyptic number.

It is an amenable number.

735128631381 is a deficient number, since it is larger than the sum of its proper divisors (296666368619).

735128631381 is a wasteful number, since it uses less digits than its factorization.

735128631381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443988.

The product of its digits is 725760, while the sum is 48.

The spelling of 735128631381 in words is "seven hundred thirty-five billion, one hundred twenty-eight million, six hundred thirty-one thousand, three hundred eighty-one".