61272730401 has 8 divisors (see below), whose sum is σ = 82539211104. Its totient is φ = 40427368320.

The previous prime is 61272730349. The next prime is 61272730427. The reversal of 61272730401 is 10403727216.

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

It is not a de Polignac number, because 61272730401 - 2¹⁷ = 61272599329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61272734401) 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, 105279315 + ... + 105279896.

It is an arithmetic number, because the mean of its divisors is an integer number (10317401388).

Almost surely, 2^61272730401 is an apocalyptic number.

It is an amenable number.

61272730401 is a deficient number, since it is larger than the sum of its proper divisors (21266480703).

61272730401 is a wasteful number, since it uses less digits than its factorization.

61272730401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210559311.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 61272730401 in words is "sixty-one billion, two hundred seventy-two million, seven hundred thirty thousand, four hundred one".