61431529093 has 8 divisors (see below), whose sum is σ = 67161590496. Its totient is φ = 55725697200.

The previous prime is 61431529091. The next prime is 61431529153. The reversal of 61431529093 is 39092513416.

It is a happy number.

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 61431529093 - 2¹ = 61431529091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61431529091) 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, 6052071 + ... + 6062212.

It is an arithmetic number, because the mean of its divisors is an integer number (8395198812).

Almost surely, 2^61431529093 is an apocalyptic number.

It is an amenable number.

61431529093 is a deficient number, since it is larger than the sum of its proper divisors (5730061403).

61431529093 is a wasteful number, since it uses less digits than its factorization.

61431529093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12114755.

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 61431529093 in words is "sixty-one billion, four hundred thirty-one million, five hundred twenty-nine thousand, ninety-three".