61045501428 has 72 divisors (see below), whose sum is σ = 161087262336. Its totient is φ = 19455480000.

The previous prime is 61045501423. The next prime is 61045501471. The reversal of 61045501428 is 82410554016.

It is a happy number.

61045501428 is a `hidden beast` number, since 6 + 104 + 5 + 501 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 61045501392 and 61045501401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61045501421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2097778 + ... + 2126678.

It is an arithmetic number, because the mean of its divisors is an integer number (2237323088).

Almost surely, 2^61045501428 is an apocalyptic number.

It is an amenable number.

61045501428 is an abundant number, since it is smaller than the sum of its proper divisors (100041760908).

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

61045501428 is a wasteful number, since it uses less digits than its factorization.

61045501428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31485 (or 31480 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 61045501428 in words is "sixty-one billion, forty-five million, five hundred one thousand, four hundred twenty-eight".