61492129421 has 8 divisors (see below), whose sum is σ = 62756985600. Its totient is φ = 60231148432.

The previous prime is 61492129417. The next prime is 61492129427. The reversal of 61492129421 is 12492129416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61492129421 - 2² = 61492129417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61492129427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936725 + ... + 1000218.

It is an arithmetic number, because the mean of its divisors is an integer number (7844623200).

Almost surely, 2^61492129421 is an apocalyptic number.

It is an amenable number.

61492129421 is a deficient number, since it is larger than the sum of its proper divisors (1264856179).

61492129421 is a wasteful number, since it uses less digits than its factorization.

61492129421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937595.

The product of its digits is 62208, while the sum is 41.

The spelling of 61492129421 in words is "sixty-one billion, four hundred ninety-two million, one hundred twenty-nine thousand, four hundred twenty-one".