61454033312 has 48 divisors (see below), whose sum is σ = 146405206080. Its totient is φ = 24788179968.

The previous prime is 61454033299. The next prime is 61454033317. The reversal of 61454033312 is 21333045416.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (61454033317) 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, 8065262 + ... + 8072877.

It is an arithmetic number, because the mean of its divisors is an integer number (3050108460).

Almost surely, 2^61454033312 is an apocalyptic number.

It is an amenable number.

61454033312 is an abundant number, since it is smaller than the sum of its proper divisors (84951172768).

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

61454033312 is a wasteful number, since it uses less digits than its factorization.

61454033312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16138173 (or 16138165 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 61454033312 its reverse (21333045416), we get a palindrome (82787078728).

The spelling of 61454033312 in words is "sixty-one billion, four hundred fifty-four million, thirty-three thousand, three hundred twelve".