71020115400 has 192 divisors, whose sum is σ = 238306622400. Its totient is φ = 17392757760.

The previous prime is 71020115393. The next prime is 71020115429. The reversal of 71020115400 is 451102017.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1513491 + ... + 1559709.

It is an arithmetic number, because the mean of its divisors is an integer number (1241180325).

Almost surely, 2^71020115400 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 71020115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119153311200).

71020115400 is an abundant number, since it is smaller than the sum of its proper divisors (167286507000).

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

71020115400 is a wasteful number, since it uses less digits than its factorization.

71020115400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46448 (or 46439 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

Adding to 71020115400 its reverse (451102017), we get a palindrome (71471217417).

The spelling of 71020115400 in words is "seventy-one billion, twenty million, one hundred fifteen thousand, four hundred".