71430745698 has 112 divisors (see below), whose sum is σ = 178970049720. Its totient is φ = 21220641792.

The previous prime is 71430745681. The next prime is 71430745717. The reversal of 71430745698 is 89654703417.

71430745698 is a `hidden beast` number, since 7 + 1 + 4 + 3 + 0 + 74 + 569 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 52163362449 + 19267383249 = 228393^2 + 138807^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 484690 + ... + 614642.

Almost surely, 2^71430745698 is an apocalyptic number.

71430745698 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71430745698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89485024860).

71430745698 is an abundant number, since it is smaller than the sum of its proper divisors (107539304022).

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

71430745698 is a wasteful number, since it uses less digits than its factorization.

71430745698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130015 (or 130000 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 71430745698 in words is "seventy-one billion, four hundred thirty million, seven hundred forty-five thousand, six hundred ninety-eight".