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3945587806495 = 54380812270953
BaseRepresentation
bin111001011010100111010…
…111000001000100011111
3111222012020210112212200001
4321122213113001010133
51004121030434301440
612220324503515131
7555026225665336
oct71324727010437
914865223485601
103945587806495
111291350501305
12538821458aa7
132280b4c1692a
14d8d78a3cd1d
156c9790bdb9a
hex396a75c111f

3945587806495 has 16 divisors (see below), whose sum is σ = 4845416460192. Its totient is φ = 3082681082880.

The previous prime is 3945587806481. The next prime is 3945587806513. The reversal of 3945587806495 is 5946087855493.

It is a de Polignac number, because none of the positive numbers 2k-3945587806495 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 601939 + ... + 2872891.

It is an arithmetic number, because the mean of its divisors is an integer number (302838528762).

Almost surely, 23945587806495 is an apocalyptic number.

3945587806495 is a deficient number, since it is larger than the sum of its proper divisors (899828653697).

3945587806495 is a wasteful number, since it uses less digits than its factorization.

3945587806495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279082.

The product of its (nonzero) digits is 1306368000, while the sum is 73.

The spelling of 3945587806495 in words is "three trillion, nine hundred forty-five billion, five hundred eighty-seven million, eight hundred six thousand, four hundred ninety-five".

Divisors: 1 5 43 215 8081 40405 347483 1737415 2270953 11354765 97650979 488254895 18351571193 91757855965 789117561299 3945587806495