61335101420 has 48 divisors (see below), whose sum is σ = 134716151808. Its totient is φ = 23412818880.

The previous prime is 61335101393. The next prime is 61335101453. The reversal of 61335101420 is 2410153316.

It is a self number, because there is not a number n which added to its sum of digits gives 61335101420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43577 + ... + 352943.

It is an arithmetic number, because the mean of its divisors is an integer number (2806586496).

Almost surely, 2^61335101420 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 61335101420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67358075904).

61335101420 is an abundant number, since it is smaller than the sum of its proper divisors (73381050388).

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

61335101420 is a wasteful number, since it uses less digits than its factorization.

61335101420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309830 (or 309828 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 61335101420 its reverse (2410153316), we get a palindrome (63745254736).

The spelling of 61335101420 in words is "sixty-one billion, three hundred thirty-five million, one hundred one thousand, four hundred twenty".