61002512454 has 64 divisors (see below), whose sum is σ = 132602012928. Its totient is φ = 18597321600.

The previous prime is 61002512443. The next prime is 61002512471. The reversal of 61002512454 is 45421520016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6974524 + ... + 6983264.

It is an arithmetic number, because the mean of its divisors is an integer number (2071906452).

Almost surely, 2^61002512454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61002512454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66301006464).

61002512454 is an abundant number, since it is smaller than the sum of its proper divisors (71599500474).

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

61002512454 is a wasteful number, since it uses less digits than its factorization.

61002512454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9573.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 61002512454 in words is "sixty-one billion, two million, five hundred twelve thousand, four hundred fifty-four".