6461687520429 has 8 divisors (see below), whose sum is σ = 8616357422112. Its totient is φ = 4307404649520.

The previous prime is 6461687520347. The next prime is 6461687520499. The reversal of 6461687520429 is 9240257861646.

It is a happy number.

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

It is not a de Polignac number, because 6461687520429 - 2¹³ = 6461687512237 is a prime.

It is a super-2 number, since 2×6461687520429² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461687520499) 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, 96718734 + ... + 96785519.

It is an arithmetic number, because the mean of its divisors is an integer number (1077044677764).

Almost surely, 2^{6461687520429} is an apocalyptic number.

It is an amenable number.

6461687520429 is a deficient number, since it is larger than the sum of its proper divisors (2154669901683).

6461687520429 is a wasteful number, since it uses less digits than its factorization.

6461687520429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193515387.

The product of its (nonzero) digits is 34836480, while the sum is 60.

The spelling of 6461687520429 in words is "six trillion, four hundred sixty-one billion, six hundred eighty-seven million, five hundred twenty thousand, four hundred twenty-nine".