61123451430 has 32 divisors (see below), whose sum is σ = 146705294304. Its totient is φ = 16298585856.

The previous prime is 61123451429. The next prime is 61123451443. The reversal of 61123451430 is 3415432116.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524154 + ... + 630066.

It is an arithmetic number, because the mean of its divisors is an integer number (4584540447).

Almost surely, 2^61123451430 is an apocalyptic number.

61123451430 is an abundant number, since it is smaller than the sum of its proper divisors (85581842874).

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

61123451430 is a wasteful number, since it uses less digits than its factorization.

61123451430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125160.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 61123451430 its reverse (3415432116), we get a palindrome (64538883546).

The spelling of 61123451430 in words is "sixty-one billion, one hundred twenty-three million, four hundred fifty-one thousand, four hundred thirty".