5145470781 has 16 divisors (see below), whose sum is σ = 7556989440. Its totient is φ = 3088188720.

The previous prime is 5145470761. The next prime is 5145470791. The reversal of 5145470781 is 1870745415.

It is not a de Polignac number, because 5145470781 - 2¹⁴ = 5145454397 is a prime.

It is a super-2 number, since 2×5145470781² = 52951739116249499922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5145470711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753511 + ... + 760308.

It is an arithmetic number, because the mean of its divisors is an integer number (472311840).

Almost surely, 2^5145470781 is an apocalyptic number.

It is an amenable number.

5145470781 is a deficient number, since it is larger than the sum of its proper divisors (2411518659).

5145470781 is a wasteful number, since it uses less digits than its factorization.

5145470781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513936.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 5145470781 is about 71731.9369667375. The cubic root of 5145470781 is about 1726.4011055631.

The spelling of 5145470781 in words is "five billion, one hundred forty-five million, four hundred seventy thousand, seven hundred eighty-one".