61403233020 has 48 divisors (see below), whose sum is σ = 171939801600. Its totient is φ = 16373171776.

The previous prime is 61403233019. The next prime is 61403233057. The reversal of 61403233020 is 2033230416.

It is a congruent number.

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, 1891849 + ... + 1924031.

It is an arithmetic number, because the mean of its divisors is an integer number (3582079200).

Almost surely, 2^61403233020 is an apocalyptic number.

61403233020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61403233020 is an abundant number, since it is smaller than the sum of its proper divisors (110536568580).

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

61403233020 is a wasteful number, since it uses less digits than its factorization.

61403233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63994 (or 63992 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 61403233020 its reverse (2033230416), we get a palindrome (63436463436).

The spelling of 61403233020 in words is "sixty-one billion, four hundred three million, two hundred thirty-three thousand, twenty".