61028456631 has 8 divisors (see below), whose sum is σ = 84177181680. Its totient is φ = 39282684672.

The previous prime is 61028456563. The next prime is 61028456633. The reversal of 61028456631 is 13665482016.

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

It is not a de Polignac number, because 61028456631 - 2¹¹ = 61028454583 is a prime.

It is a super-2 number, since 2×61028456631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61028456633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350738170 + ... + 350738343.

It is an arithmetic number, because the mean of its divisors is an integer number (10522147710).

Almost surely, 2^61028456631 is an apocalyptic number.

61028456631 is a deficient number, since it is larger than the sum of its proper divisors (23148725049).

61028456631 is a wasteful number, since it uses less digits than its factorization.

61028456631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701476545.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 61028456631 in words is "sixty-one billion, twenty-eight million, four hundred fifty-six thousand, six hundred thirty-one".