61405429000 has 64 divisors (see below), whose sum is σ = 146399937840. Its totient is φ = 24098713600.

The previous prime is 61405428979. The next prime is 61405429009. The reversal of 61405429000 is 92450416.

It can be written as a sum of positive squares in 8 ways, for example, as 19389448516 + 42015980484 = 139246^2 + 204978^2 .

It is not an unprimeable number, because it can be changed into a prime (61405429009) 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, 526297 + ... + 632296.

Almost surely, 2^61405429000 is an apocalyptic number.

It is an amenable number.

61405429000 is an abundant number, since it is smaller than the sum of its proper divisors (84994508840).

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

61405429000 is a wasteful number, since it uses less digits than its factorization.

61405429000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158667 (or 1158653 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 61405429000 its reverse (92450416), we get a palindrome (61497879416).

The spelling of 61405429000 in words is "sixty-one billion, four hundred five million, four hundred twenty-nine thousand".