61261235501 has 8 divisors (see below), whose sum is σ = 61349718144. Its totient is φ = 61172811360.

The previous prime is 61261235473. The next prime is 61261235537. The reversal of 61261235501 is 10553216216.

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

It is a cyclic number.

It is not a de Polignac number, because 61261235501 - 2¹⁰ = 61261234477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61261238501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2349506 + ... + 2375436.

It is an arithmetic number, because the mean of its divisors is an integer number (7668714768).

Almost surely, 2^61261235501 is an apocalyptic number.

It is an amenable number.

61261235501 is a deficient number, since it is larger than the sum of its proper divisors (88482643).

61261235501 is a wasteful number, since it uses less digits than its factorization.

61261235501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29251.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 61261235501 in words is "sixty-one billion, two hundred sixty-one million, two hundred thirty-five thousand, five hundred one".