61535521454 has 8 divisors (see below), whose sum is σ = 100694489688. Its totient is φ = 27970691560.

The previous prime is 61535521433. The next prime is 61535521499. The reversal of 61535521454 is 45412553516.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398534557 + ... + 1398534600.

It is an arithmetic number, because the mean of its divisors is an integer number (12586811211).

Almost surely, 2^61535521454 is an apocalyptic number.

61535521454 is a deficient number, since it is larger than the sum of its proper divisors (39158968234).

61535521454 is a wasteful number, since it uses less digits than its factorization.

61535521454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797069170.

The product of its digits is 360000, while the sum is 41.

The spelling of 61535521454 in words is "sixty-one billion, five hundred thirty-five million, five hundred twenty-one thousand, four hundred fifty-four".