51441451145 has 16 divisors (see below), whose sum is σ = 70597370880. Its totient is φ = 35249590464.

The previous prime is 51441451129. The next prime is 51441451231. The reversal of 51441451145 is 54115414415.

It is a cyclic number.

It is not a de Polignac number, because 51441451145 - 2⁴ = 51441451129 is a prime.

It is a super-2 number, since 2×51441451145² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460322 + ... + 561051.

It is an arithmetic number, because the mean of its divisors is an integer number (4412335680).

Almost surely, 2^51441451145 is an apocalyptic number.

It is an amenable number.

51441451145 is a deficient number, since it is larger than the sum of its proper divisors (19155919735).

51441451145 is a wasteful number, since it uses less digits than its factorization.

51441451145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022824.

The product of its digits is 32000, while the sum is 35.

The spelling of 51441451145 in words is "fifty-one billion, four hundred forty-one million, four hundred fifty-one thousand, one hundred forty-five".