61203140421 has 16 divisors (see below), whose sum is σ = 83511405120. Its totient is φ = 39848699520.

The previous prime is 61203140413. The next prime is 61203140429. The reversal of 61203140421 is 12404130216.

It is an interprime number because it is at equal distance from previous prime (61203140413) and next prime (61203140429).

It is not a de Polignac number, because 61203140421 - 2³ = 61203140413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61203140391 and 61203140400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61203140429) 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, 1418515 + ... + 1461023.

It is an arithmetic number, because the mean of its divisors is an integer number (5219462820).

Almost surely, 2^61203140421 is an apocalyptic number.

It is an amenable number.

61203140421 is a deficient number, since it is larger than the sum of its proper divisors (22308264699).

61203140421 is a wasteful number, since it uses less digits than its factorization.

61203140421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53716.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 61203140421 its reverse (12404130216), we get a palindrome (73607270637).

The spelling of 61203140421 in words is "sixty-one billion, two hundred three million, one hundred forty thousand, four hundred twenty-one".